Dan encourages the family to decorate the house for Halloween; Harris takes a stand on an issue that ruffles a few feathers in Darlene's new neighborhood.

When the guys buy a ring from "The Lord of the Rings" at a garage sale, the item threatens to tear them apart.

Sheldon's stage fright stands between him and a coveted award.

Penny and Leonard have a fight that threatens their relationship; Sheldon and Wil Wheaton face off once again.

Refinery employees balance the conflicting personalities of a small town with the antics of a stressful workplace.

Carrie feels that she and Doug are getting stupid as a couple, so she enrolls them and Spence into a class where they read a book and discuss it.

Doug loses his license to drive after Ray Barone (Ray Romano) cheats off his driving test. Brad Garrett and Peter Boyle also guest star.

Doug, Carrie and Arthur face a chaotic trip to the grocery store on the day before Thanksgiving; Doug encounters a stranger from his past.

Arthur's Christmas gift to Doug and Carrie provides a solution to the couple's car troubles that ends up being worse than the problem.

Refinery employees balance the conflicting personalities of a small town with the antics of a stressful workplace.

Problems arise on Beverly Rose's first day of kindergarten; Becky and Darlene have a disagreement; Harris advises an unusual solution for Dan's back pain.

Dan encourages the family to decorate the house for Halloween; Harris takes a stand on an issue that ruffles a few feathers in Darlene's new neighborhood.

Lacey's not invited to the Harvest Dance; Emma's dreaded jelly salad; Hank falls for highway worker.

Brent behaves differently when Wanda wears a skirt to work; feeling empowered, she tests the limits of her feminine charm, but Brent's new attitude toward her may not be motivating.

Brent and Lacey go to great lengths to find each other the perfect Christmas present; Hank gets conned into helping Oscar and Emma prep their annual Christmas party; Wanda goes to war with the cops over her extreme Christmas lights display.

Brent and Wanda help Lacey overcome her fears so she can go skydiving; Hank becomes the town messenger; Oscar and Emma go to war with Karen and Davis over a prime potato planting locale.

Knowing all about the Cash Cab, Kevin explains the deal to the rest of his friends and makes sure they know they are going "Double or...

With people outside the Cash Cab wanting in, Rob, Dean and Nick want to get playing the game as soon as possible. These friends do...

Lacey's not invited to the Harvest Dance; Emma's dreaded jelly salad; Hank falls for highway worker.

Brent behaves differently when Wanda wears a skirt to work; feeling empowered, she tests the limits of her feminine charm, but Brent's new attitude toward her may not be motivating.

Brent and Lacey go to great lengths to find each other the perfect Christmas present; Hank gets conned into helping Oscar and Emma prep their annual Christmas party; Wanda goes to war with the cops over her extreme Christmas lights display.

Brent and Wanda help Lacey overcome her fears so she can go skydiving; Hank becomes the town messenger; Oscar and Emma go to war with Karen and Davis over a prime potato planting locale.

Knowing all about the Cash Cab, Kevin explains the deal to the rest of his friends and makes sure they know they are going "Double or...

With people outside the Cash Cab wanting in, Rob, Dean and Nick want to get playing the game as soon as possible. These friends do...

Lacey's not invited to the Harvest Dance; Emma's dreaded jelly salad; Hank falls for highway worker.

Brent behaves differently when Wanda wears a skirt to work; feeling empowered, she tests the limits of her feminine charm, but Brent's new attitude toward her may not be motivating.

Brent and Lacey go to great lengths to find each other the perfect Christmas present; Hank gets conned into helping Oscar and Emma prep their annual Christmas party; Wanda goes to war with the cops over her extreme Christmas lights display.

Brent and Wanda help Lacey overcome her fears so she can go skydiving; Hank becomes the town messenger; Oscar and Emma go to war with Karen and Davis over a prime potato planting locale.

Darlene receives a promotion at her company, but she quickly learns the fancy title is not all it's cracked up to be; when Louise loses her job at Casita Bonita, an opportunity arises to work with Jackie at the Lunch Box.

Carrie feels that she and Doug are getting stupid as a couple, so she enrolls them and Spence into a class where they read a book and discuss it.

Doug loses his license to drive after Ray Barone (Ray Romano) cheats off his driving test. Brad Garrett and Peter Boyle also guest star.

Doug, Carrie and Arthur face a chaotic trip to the grocery store on the day before Thanksgiving; Doug encounters a stranger from his past.

Arthur's Christmas gift to Doug and Carrie provides a solution to the couple's car troubles that ends up being worse than the problem.

Sheldon invites a famous physicist to the apartment, and competes with Leonard for her attention.

Leonard tells Penny about how he met Sheldon and what happened to the elevator.

Raj and Howard set up an online dating profile for Sheldon and find the perfect woman.

Darlene receives a promotion at her company, but she quickly learns the fancy title is not all it's cracked up to be; when Louise loses her job at Casita Bonita, an opportunity arises to work with Jackie at the Lunch Box.

Jackie must come to terms with her mother becoming ill; Darlene's job hunt proves to be more difficult than anticipated.

The gang surprises Joey by joining him in Las Vegas on a film shoot; a winning streak leads Chandler to press his luck with a proposition.

Chandler and Monica reconcile and hastily decide to get married; Ross and Rachel get drunk and roam the casino; Phoebe deals with a lurker on the slot machines.

Hung-over Rachel and Ross wonder if they got married while in Vegas; Monica and Chandler search the Strip for signs that they are altar-bound.

Mandy struggles to celebrate Georgie's 21st birthday after hitting a rough patch in her career.

Sheldon invites a famous physicist to the apartment, and competes with Leonard for her attention.

Leonard tells Penny about how he met Sheldon and what happened to the elevator.

Penny tags along on Sheldon's first date; Wolowitz finds a new use for a robotic arm.

Realizing he will not live long enough to download his consciousness into a robot body, Sheldon tries to extend his life span.

Raj and Howard set up an online dating profile for Sheldon and find the perfect woman.

Jackie must come to terms with her mother becoming ill; Darlene's job hunt proves to be more difficult than anticipated.

Sheldon invites a famous physicist to the apartment, and competes with Leonard for her attention.

Leonard tells Penny about how he met Sheldon and what happened to the elevator.

Raj and Howard set up an online dating profile for Sheldon and find the perfect woman.

Realizing he will not live long enough to download his consciousness into a robot body, Sheldon tries to extend his life span.

The gang surprises Joey by joining him in Las Vegas on a film shoot; a winning streak leads Chandler to press his luck with a proposition.

Chandler and Monica reconcile and hastily decide to get married; Ross and Rachel get drunk and roam the casino; Phoebe deals with a lurker on the slot machines.

Hung-over Rachel and Ross wonder if they got married while in Vegas; Monica and Chandler search the Strip for signs that they are altar-bound.

Mandy struggles to celebrate Georgie's 21st birthday after hitting a rough patch in her career.

Penny tags along on Sheldon's first date; Wolowitz finds a new use for a robotic arm.

Realizing he will not live long enough to download his consciousness into a robot body, Sheldon tries to extend his life span.

Darlene receives a promotion at her company, but she quickly learns the fancy title is not all it's cracked up to be; when Louise loses her job at Casita Bonita, an opportunity arises to work with Jackie at the Lunch Box.

Jackie must come to terms with her mother becoming ill; Darlene's job hunt proves to be more difficult than anticipated.

Hank's premonitions freak Wanda out; Lacey fixes the pothole.

When Emma gives Brent flack over his coffee drinking, he vows to quit cold turkey if she quits knitting; as Brent struggles in a caffeine free world, Emma takes up a new pastime.

Wanda, Lacey, and Karen team up to fix The Ruby's broken toaster; Emma and Oscar have an impression-off; Davis is excited when he discovers Hank owns a valuable action figure.

Oscar's convinced there's a venomous cobra in his backyard; Hank discovers an intriguing bird's nest and sets up a livestream so everyone in town can watch the eggs hatch.

Unassuming people enter a taxi cab as simple passengers taking a normal ride, only to be surprised when they discover that they're instant contestants; Adam Grove asks the passengers trivia questions as he escorts them to their destination.

Unassuming people enter the Cash Cab as passengers expecting a normal taxi ride.

Hank's premonitions freak Wanda out; Lacey fixes the pothole.

When Emma gives Brent flack over his coffee drinking, he vows to quit cold turkey if she quits knitting; as Brent struggles in a caffeine free world, Emma takes up a new pastime.

Wanda, Lacey, and Karen team up to fix The Ruby's broken toaster; Emma and Oscar have an impression-off; Davis is excited when he discovers Hank owns a valuable action figure.

Oscar's convinced there's a venomous cobra in his backyard; Hank discovers an intriguing bird's nest and sets up a livestream so everyone in town can watch the eggs hatch.

Unassuming people enter a taxi cab as simple passengers taking a normal ride, only to be surprised when they discover that they're instant contestants; Adam Grove asks the passengers trivia questions as he escorts them to their destination.

Unassuming people enter the Cash Cab as passengers expecting a normal taxi ride.

Hank's premonitions freak Wanda out; Lacey fixes the pothole.

When Emma gives Brent flack over his coffee drinking, he vows to quit cold turkey if she quits knitting; as Brent struggles in a caffeine free world, Emma takes up a new pastime.

Wanda, Lacey, and Karen team up to fix The Ruby's broken toaster; Emma and Oscar have an impression-off; Davis is excited when he discovers Hank owns a valuable action figure.

Oscar's convinced there's a venomous cobra in his backyard; Hank discovers an intriguing bird's nest and sets up a livestream so everyone in town can watch the eggs hatch.

Darlene, Ben, Becky and Beverly Rose move into the new house, where Darlene implements a new set of rules.

The gang surprises Joey by joining him in Las Vegas on a film shoot; a winning streak leads Chandler to press his luck with a proposition.

Chandler and Monica reconcile and hastily decide to get married; Ross and Rachel get drunk and roam the casino; Phoebe deals with a lurker on the slot machines.

Hung-over Rachel and Ross wonder if they got married while in Vegas; Monica and Chandler search the Strip for signs that they are altar-bound.

Mandy struggles to celebrate Georgie's 21st birthday after hitting a rough patch in her career.

When Sheldon searches for an alternative to human companionship, the guys become concerned.

An embarrassing secret of Wolowitz's is revealed; Raj and Sheldon get into a war at work.

Leonard realizes he is the only one in his group without a girlfriend; Sheldon wants to get rid of his girlfriend.

Darlene, Ben, Becky and Beverly Rose move into the new house, where Darlene implements a new set of rules.

Dan meets his in-laws for the first time when Louise's family comes to visit; Darlene helps Becky with a parenting problem.

Ross has Rachel on his mind when he gets between feuding Monica and Chandler; Joey advertises for a specific roommate.

A hernia-bearing Joey tries to pick up a quick acting gig; Rachel discovers that Ross never had their marriage annulled.

Rachel wants Ross to admit that he's mentally unbalanced so that a judge will grant them an annulment.

Reggie and Monica restart their youth football camp and face off against their old rivals, Jerry and Tisha Basmati.

When Sheldon searches for an alternative to human companionship, the guys become concerned.

An embarrassing secret of Wolowitz's is revealed; Raj and Sheldon get into a war at work.

Leonard keeps an affair a secret from Sheldon, Howard and Raj.

Sheldon's interview with the FBI jeopardizes Wolowitz's security clearance.

Leonard realizes he is the only one in his group without a girlfriend; Sheldon wants to get rid of his girlfriend.

Dan meets his in-laws for the first time when Louise's family comes to visit; Darlene helps Becky with a parenting problem.

When Sheldon searches for an alternative to human companionship, the guys become concerned.

An embarrassing secret of Wolowitz's is revealed; Raj and Sheldon get into a war at work.

Leonard realizes he is the only one in his group without a girlfriend; Sheldon wants to get rid of his girlfriend.

Sheldon's interview with the FBI jeopardizes Wolowitz's security clearance.

Ross has Rachel on his mind when he gets between feuding Monica and Chandler; Joey advertises for a specific roommate.

A hernia-bearing Joey tries to pick up a quick acting gig; Rachel discovers that Ross never had their marriage annulled.

Rachel wants Ross to admit that he's mentally unbalanced so that a judge will grant them an annulment.

Reggie and Monica restart their youth football camp and face off against their old rivals, Jerry and Tisha Basmati.

Leonard keeps an affair a secret from Sheldon, Howard and Raj.

Sheldon's interview with the FBI jeopardizes Wolowitz's security clearance.

Darlene, Ben, Becky and Beverly Rose move into the new house, where Darlene implements a new set of rules.

Dan meets his in-laws for the first time when Louise's family comes to visit; Darlene helps Becky with a parenting problem.

Karen buys a new breathalyzer machine; Lacey puts up a new bulletin board.

Hank is being outwitted by a dog; Brent and Lacy create travel mugs for souvenirs.

Brent discovers his parents put money aside for him, but Oscar's forgotten where it is; Karen and Davis are hurt to learn how often people lie to the police and enlist Wanda as their lie detector.

Karen, Wanda, and Lacey struggle to get noticed on a dating app; Oscar, Emma, and Hank try to figure out who purchased the abandoned lot in town.

Unassuming people enter a taxi cab as simple passengers taking a normal ride, only to be surprised when they discover that they're instant contestants; Adam Grove asks the passengers trivia questions as he escorts them to their destination.

Unassuming people enter a taxi cab as simple passengers taking a normal ride, only to be surprised when they discover that they're instant contestants; Adam Grove asks the passengers trivia questions as he escorts them to their destination.

Karen buys a new breathalyzer machine; Lacey puts up a new bulletin board.

Hank is being outwitted by a dog; Brent and Lacy create travel mugs for souvenirs.

Brent discovers his parents put money aside for him, but Oscar's forgotten where it is; Karen and Davis are hurt to learn how often people lie to the police and enlist Wanda as their lie detector.

Karen, Wanda, and Lacey struggle to get noticed on a dating app; Oscar, Emma, and Hank try to figure out who purchased the abandoned lot in town.

Unassuming people enter a taxi cab as simple passengers taking a normal ride, only to be surprised when they discover that they're instant contestants; Adam Grove asks the passengers trivia questions as he escorts them to their destination.

Unassuming people enter a taxi cab as simple passengers taking a normal ride, only to be surprised when they discover that they're instant contestants; Adam Grove asks the passengers trivia questions as he escorts them to their destination.

Karen buys a new breathalyzer machine; Lacey puts up a new bulletin board.

Hank is being outwitted by a dog; Brent and Lacy create travel mugs for souvenirs.

Brent discovers his parents put money aside for him, but Oscar's forgotten where it is; Karen and Davis are hurt to learn how often people lie to the police and enlist Wanda as their lie detector.

Karen, Wanda, and Lacey struggle to get noticed on a dating app; Oscar, Emma, and Hank try to figure out who purchased the abandoned lot in town.

The death of a beloved teacher from Dan and Jackie's high school brings old classmates together; Becky asks Darlene and Ben for a big favor.

Ross has Rachel on his mind when he gets between feuding Monica and Chandler; Joey advertises for a specific roommate.

A hernia-bearing Joey tries to pick up a quick acting gig; Rachel discovers that Ross never had their marriage annulled.

Rachel wants Ross to admit that he's mentally unbalanced so that a judge will grant them an annulment.

Reggie and Monica restart their youth football camp and face off against their old rivals, Jerry and Tisha Basmati.

While the guys camp out for a long-awaited movie screening, Penny and Bernadette invite Amy to her first slumber party.

Penny asks Leonard to lie to her father (Keith Carradine); Howard, Raj and Bernadette pull an all-nighter at a telescope.

Amy realizes she has feelings for Penny's ex; Koothrappali and Wolowitz try to prove who would be a better superhero.

The death of a beloved teacher from Dan and Jackie's high school brings old classmates together; Becky asks Darlene and Ben for a big favor.

Darlene and Ben get into a fight and ignore Becky's boundaries in the house; Dan accuses Jackie of losing all of their home videos.

After Dr. Sturgis experiences a nervous breakdown, Mary worries Sheldon is headed down a similar path; Georgie discovers he has a knack for sales.

Without Dr. Sturgis' university class, Sheldon must find a new way to stay academically challenged; Mary helps Pastor Jeff avoid temptation with his girlfriend.

Sheldon takes matters into his own hands when Meemaw refuses to drive him to a lecture; Georgie tries to impress Veronica with his new business venture.

Bruce considers a new chapter in his career; Serena uses a baby to get out of work; Matt helps Ron log onto his computer.

J.D. ventures into the world of post-divorce dating with Turk's guidance; Elliot gets creative when sourcing an organ for a beloved elderly patient; the interns learn about the unspoken rules of the hospital.

Penny asks Leonard to lie to her father (Keith Carradine); Howard, Raj and Bernadette pull an all-nighter at a telescope.

The guys try to bond with Penny's new boyfriend through a costume contest.

Leonard's idea for a smartphone application causes friction in his friendship with Sheldon.

Amy realizes she has feelings for Penny's ex; Koothrappali and Wolowitz try to prove who would be a better superhero.

Darlene and Ben get into a fight and ignore Becky's boundaries in the house; Dan accuses Jackie of losing all of their home videos.

While the guys camp out for a long-awaited movie screening, Penny and Bernadette invite Amy to her first slumber party.

Penny asks Leonard to lie to her father (Keith Carradine); Howard, Raj and Bernadette pull an all-nighter at a telescope.

Amy realizes she has feelings for Penny's ex; Koothrappali and Wolowitz try to prove who would be a better superhero.

Leonard's idea for a smartphone application causes friction in his friendship with Sheldon.

After Dr. Sturgis experiences a nervous breakdown, Mary worries Sheldon is headed down a similar path; Georgie discovers he has a knack for sales.

Without Dr. Sturgis' university class, Sheldon must find a new way to stay academically challenged; Mary helps Pastor Jeff avoid temptation with his girlfriend.

Bruce considers a new chapter in his career; Serena uses a baby to get out of work; Matt helps Ron log onto his computer.

J.D. ventures into the world of post-divorce dating with Turk's guidance; Elliot gets creative when sourcing an organ for a beloved elderly patient; the interns learn about the unspoken rules of the hospital.

The guys try to bond with Penny's new boyfriend through a costume contest.

Leonard's idea for a smartphone application causes friction in his friendship with Sheldon.

The death of a beloved teacher from Dan and Jackie's high school brings old classmates together; Becky asks Darlene and Ben for a big favor.

Darlene and Ben get into a fight and ignore Becky's boundaries in the house; Dan accuses Jackie of losing all of their home videos.

Brent's annual trip to exotic locales stirs jealousy; Oscar experiments with e-mail.

Lacey wants to start a running club; Hank's new crossing guard job.

Brent and Hank battle to take back their childhood tree house; Oscar's in denial.

Brent purchases a new digital camera; trivia showdown; Oscar is haunted by a ceramic gnome.

Unassuming people enter a taxi cab as simple passengers taking a normal ride, only to be surprised when they discover that they're instant contestants; Adam Grove asks the passengers trivia questions as he escorts them to their destination.

Unassuming people enter a taxi cab as simple passengers taking a normal ride, only to be surprised when they discover that they're instant contestants; Adam Grove asks the passengers trivia questions as he escorts them to their destination.

Brent's annual trip to exotic locales stirs jealousy; Oscar experiments with e-mail.

Lacey wants to start a running club; Hank's new crossing guard job.

Brent and Hank battle to take back their childhood tree house; Oscar's in denial.

Brent purchases a new digital camera; trivia showdown; Oscar is haunted by a ceramic gnome.

Unassuming people enter a taxi cab as simple passengers taking a normal ride, only to be surprised when they discover that they're instant contestants; Adam Grove asks the passengers trivia questions as he escorts them to their destination.

Unassuming people enter a taxi cab as simple passengers taking a normal ride, only to be surprised when they discover that they're instant contestants; Adam Grove asks the passengers trivia questions as he escorts them to their destination.

Brent's annual trip to exotic locales stirs jealousy; Oscar experiments with e-mail.

Lacey wants to start a running club; Hank's new crossing guard job.

Brent and Hank battle to take back their childhood tree house; Oscar's in denial.

Brent purchases a new digital camera; trivia showdown; Oscar is haunted by a ceramic gnome.

Darlene has issues with Dan's plumbing work in her new house; Jackie tries to find a caregiver for Bev.

After Dr. Sturgis experiences a nervous breakdown, Mary worries Sheldon is headed down a similar path; Georgie discovers he has a knack for sales.

Without Dr. Sturgis' university class, Sheldon must find a new way to stay academically challenged; Mary helps Pastor Jeff avoid temptation with his girlfriend.

Sheldon takes matters into his own hands when Meemaw refuses to drive him to a lecture; Georgie tries to impress Veronica with his new business venture.

Bruce considers a new chapter in his career; Serena uses a baby to get out of work; Matt helps Ron log onto his computer.

Bernadette runs into her ex-boyfriend (Rick Fox) while attending a science event with Wolowitz.

Sheldon takes acting lessons from Penny in hope of becoming a better teacher; Koothrappali fantasizes about his friend's girlfriend.

A wealthy donor makes Leonard question what he is willing to do for science.

Darlene has issues with Dan's plumbing work in her new house; Jackie tries to find a caregiver for Bev.

Darlene continues her search for a new job; Becky is desperate to spend more time with Beverly Rose.

After being released from the mental hospital, Dr. Sturgis unexpectedly breaks up with Meemaw.

A church carnival leads Missy to try out for the baseball team; Meemaw struggles after her breakup with Dr. Sturgis.

Sheldon starts an internet flame war; Missy stands up to the boys on her baseball team; Meemaw is unhappy when George Sr. spends time with her new boyfriend.

The University makes George Sr. a lucrative job offer in hopes of recruiting Sheldon; Georgie gets a job working for Meemaw's new boyfriend; Mary is determined to rid her home of greed.

Bernadette runs into her ex-boyfriend (Rick Fox) while attending a science event with Wolowitz.

Sheldon takes acting lessons from Penny in hope of becoming a better teacher; Koothrappali fantasizes about his friend's girlfriend.

Wolowitz considers taking things with Bernadette to the next level; Leonard and Raj's sister rekindle their relationship.

Sheldon is upset when he realizes Leonard is the center of their group of friends.

TV celebrity Steve Rogers rents Julian's bar for his stag party, which overflows into Bubbles's Shed-and-Breakfast sheds.

Bubbles's attempts to clear up a crab infestation cause him embarrassment, and he's arrested for indecent exposure.

Bernadette runs into her ex-boyfriend (Rick Fox) while attending a science event with Wolowitz.

Sheldon takes acting lessons from Penny in hope of becoming a better teacher; Koothrappali fantasizes about his friend's girlfriend.

A wealthy donor makes Leonard question what he is willing to do for science.

Sheldon is upset when he realizes Leonard is the center of their group of friends.

TV celebrity Steve Rogers rents Julian's bar for his stag party, which overflows into Bubbles's Shed-and-Breakfast sheds.

Sheldon starts an internet flame war; Missy stands up to the boys on her baseball team; Meemaw is unhappy when George Sr. spends time with her new boyfriend.

The University makes George Sr. a lucrative job offer in hopes of recruiting Sheldon; Georgie gets a job working for Meemaw's new boyfriend; Mary is determined to rid her home of greed.

Wolowitz considers taking things with Bernadette to the next level; Leonard and Raj's sister rekindle their relationship.

Sheldon is upset when he realizes Leonard is the center of their group of friends.

Darlene has issues with Dan's plumbing work in her new house; Jackie tries to find a caregiver for Bev.

Darlene continues her search for a new job; Becky is desperate to spend more time with Beverly Rose.

Oscar tries to fix a roof; Brent and Karen write a kid's book on bike safety.

Brent fears he is losing his hair; Wanda gets a new lamp and has to fight to keep it.

Lacey starts a coffee shop newsletter; Oscar's childhood dream.

Lacey's friend Connie comes to Dog River; Davis thinks Karen would make a bad undercover cop.

It's Dog River's 100th birthday and Hank wants to pay tribute by building a scale model of the town using Lego blocks; like any artist, he demands perfection.

Davis shapes up; Brent and Lacey compete to get a secret from Karen.

Leonard has to choose between Penny and his new girlfriend, Priya; Howard's magic trick drives Sheldon crazy.

The guys try to figure out who hacked Sheldon's online-game account.

Amy and Sheldon spread gossip as part of an experiment; Howard decides to take a big step in his relationship with Bernadette.

Priya dissects the roommate agreement; the ladies take Sheldon dancing.

Raj tries to cure his social anxiety; Penny spies on Leonard and his girlfriend through Bernadette.

Howard's mom winds up in the hospital after hearing news of her son's engagement to Bernadette.

Bernadette gets her Ph.D., inspiring the guys to tease Wolowitz about his lack of a doctorate; Raj becomes Sheldon's roommate.

Penny worries that she has ruined her relationship with her friends; Sheldon takes over the paintball team.

Amy is caught in the middle when Penny and Sheldon get into an argument over a pre-owned chair; Leonard tries to make his long-distance relationship more exciting.

Amy and Leonard try to become better acquainted; Bernadette, Howard and Mrs. Wolowitz spend the weekend together.

Raj wants a girlfriend, so Penny introduces him to a woman he can communicate with.

Wil Wheaton invites Leonard and Sheldon to a party at his house; Howard receives an opportunity.

Sheldon finds himself competing with the gang for his mother's (Laurie Metcalf) attention when she visits.

An attractive comic book artist tests Leonard and Priya's relationship; Sheldon tries to scare his friends.

Leonard has to choose between Penny and his new girlfriend, Priya; Howard's magic trick drives Sheldon crazy.

The guys try to figure out who hacked Sheldon's online-game account.

Amy and Sheldon spread gossip as part of an experiment; Howard decides to take a big step in his relationship with Bernadette.

Priya dissects the roommate agreement; the ladies take Sheldon dancing.

Raj tries to cure his social anxiety; Penny spies on Leonard and his girlfriend through Bernadette.

Howard's mom winds up in the hospital after hearing news of her son's engagement to Bernadette.

Bernadette gets her Ph.D., inspiring the guys to tease Wolowitz about his lack of a doctorate; Raj becomes Sheldon's roommate.

Penny worries that she has ruined her relationship with her friends; Sheldon takes over the paintball team.

Amy is caught in the middle when Penny and Sheldon get into an argument over a pre-owned chair; Leonard tries to make his long-distance relationship more exciting.

Amy and Leonard try to become better acquainted; Bernadette, Howard and Mrs. Wolowitz spend the weekend together.

Raj wants a girlfriend, so Penny introduces him to a woman he can communicate with.

Wil Wheaton invites Leonard and Sheldon to a party at his house; Howard receives an opportunity.

Sheldon finds himself competing with the gang for his mother's (Laurie Metcalf) attention when she visits.

An attractive comic book artist tests Leonard and Priya's relationship; Sheldon tries to scare his friends.

Leonard has to choose between Penny and his new girlfriend, Priya; Howard's magic trick drives Sheldon crazy.

The guys try to figure out who hacked Sheldon's online-game account.

Amy and Sheldon spread gossip as part of an experiment; Howard decides to take a big step in his relationship with Bernadette.

Priya dissects the roommate agreement; the ladies take Sheldon dancing.

Raj tries to cure his social anxiety; Penny spies on Leonard and his girlfriend through Bernadette.

Howard's mom winds up in the hospital after hearing news of her son's engagement to Bernadette.

Bernadette gets her Ph.D., inspiring the guys to tease Wolowitz about his lack of a doctorate; Raj becomes Sheldon's roommate.

Penny worries that she has ruined her relationship with her friends; Sheldon takes over the paintball team.

Amy is caught in the middle when Penny and Sheldon get into an argument over a pre-owned chair; Leonard tries to make his long-distance relationship more exciting.

Amy and Leonard try to become better acquainted; Bernadette, Howard and Mrs. Wolowitz spend the weekend together.

Raj wants a girlfriend, so Penny introduces him to a woman he can communicate with.

Wil Wheaton invites Leonard and Sheldon to a party at his house; Howard receives an opportunity.

Sheldon finds himself competing with the gang for his mother's (Laurie Metcalf) attention when she visits.

An attractive comic book artist tests Leonard and Priya's relationship; Sheldon tries to scare his friends.

Brent enters into a long-term relationship; Wanda's telescope.

A simple jar of jellybeans turns Dog River's park from a dilapidated local hazard into full-blown scandal.

Brent helps Lacey buy a new car; Karen and Davis try to break the idea of cops in donut shops.

Karen is upset when Emma cuts Brent's hair; Hank promises to stain Lacey's deck.

When a morning radio DJ impersonates Brent on his show, he goes out of his way to prove it's not him; Lacey is upset with her delivery service.

Oscar and Emma argue over the room temperature; Karen makes Lacey regret disobeying a local yield sign.

Rachel regrets asking Phoebe to jog with her when her uncoordinated movements attract unwanted attention.

After bleaching his teeth, Ross discovers they glow in the dark; Joey's new roommate wants to redecorate.

Chandler finds out Monica never told her parents he was living with her; Rachel tries her hand at making dessert.

Janine invites Joey, Monica and Ross to a TV taping; Phoebe and Rachel want an early glimpse at their Christmas gifts.

Janine's attitude causes strife between Joey and his friends; Rachel gets an apothecary table from a flea market.

Ross and Chandler argue over authorship of a joke; a question from Monica puts Phoebe on the spot; Joey reluctantly takes a job at Central Perk.

Rachel is worried about her sister's flirtation with Ross; sickly Monica is well enough to seduce Chandler; Joey uses free food to lure women to date him.

Rachel and her sister get into a heated sibling rivalry over Ross; Chandler confesses he hasn't cried since he was a child.

When Rachel tells her friends about Barry and Mindy's impending divorce, the others speculate how their lives could have turned out if they had chosen different paths.

Carol and Ross decide to spice up their marriage; Rachel goes to Joey's and kisses him; Rachel catches Barry cheating.

Chandler's anniversary gift to Monica is really one an ex-girlfriend gave him; Joey hires a look-alike; Ross tries to teach martial arts to Rachel.

Ross toys with dating one of his students; a curling iron starts a fire in Phoebe and Rachel's apartment.

Monica and Phoebe compete to find Rachel a date; Joey tries to con his friends into buying him a new refrigerator.

Chandler jeopardizes Joey's chances for the lead role in a TV series when he forgets to take down a message.

Rachel regrets asking Phoebe to jog with her when her uncoordinated movements attract unwanted attention.

After bleaching his teeth, Ross discovers they glow in the dark; Joey's new roommate wants to redecorate.

Chandler finds out Monica never told her parents he was living with her; Rachel tries her hand at making dessert.

Janine invites Joey, Monica and Ross to a TV taping; Phoebe and Rachel want an early glimpse at their Christmas gifts.

Janine's attitude causes strife between Joey and his friends; Rachel gets an apothecary table from a flea market.

Ross and Chandler argue over authorship of a joke; a question from Monica puts Phoebe on the spot; Joey reluctantly takes a job at Central Perk.

Rachel is worried about her sister's flirtation with Ross; sickly Monica is well enough to seduce Chandler; Joey uses free food to lure women to date him.

Rachel and her sister get into a heated sibling rivalry over Ross; Chandler confesses he hasn't cried since he was a child.

When Rachel tells her friends about Barry and Mindy's impending divorce, the others speculate how their lives could have turned out if they had chosen different paths.

Carol and Ross decide to spice up their marriage; Rachel goes to Joey's and kisses him; Rachel catches Barry cheating.

Chandler's anniversary gift to Monica is really one an ex-girlfriend gave him; Joey hires a look-alike; Ross tries to teach martial arts to Rachel.

Ross toys with dating one of his students; a curling iron starts a fire in Phoebe and Rachel's apartment.

Monica and Phoebe compete to find Rachel a date; Joey tries to con his friends into buying him a new refrigerator.

Chandler jeopardizes Joey's chances for the lead role in a TV series when he forgets to take down a message.

Rachel regrets asking Phoebe to jog with her when her uncoordinated movements attract unwanted attention.

After bleaching his teeth, Ross discovers they glow in the dark; Joey's new roommate wants to redecorate.

Chandler finds out Monica never told her parents he was living with her; Rachel tries her hand at making dessert.

Janine invites Joey, Monica and Ross to a TV taping; Phoebe and Rachel want an early glimpse at their Christmas gifts.

Janine's attitude causes strife between Joey and his friends; Rachel gets an apothecary table from a flea market.

Ross and Chandler argue over authorship of a joke; a question from Monica puts Phoebe on the spot; Joey reluctantly takes a job at Central Perk.

Rachel is worried about her sister's flirtation with Ross; sickly Monica is well enough to seduce Chandler; Joey uses free food to lure women to date him.

Rachel and her sister get into a heated sibling rivalry over Ross; Chandler confesses he hasn't cried since he was a child.

When Rachel tells her friends about Barry and Mindy's impending divorce, the others speculate how their lives could have turned out if they had chosen different paths.

Carol and Ross decide to spice up their marriage; Rachel goes to Joey's and kisses him; Rachel catches Barry cheating.

Chandler's anniversary gift to Monica is really one an ex-girlfriend gave him; Joey hires a look-alike; Ross tries to teach martial arts to Rachel.

Ross toys with dating one of his students; a curling iron starts a fire in Phoebe and Rachel's apartment.

Monica and Phoebe compete to find Rachel a date; Joey tries to con his friends into buying him a new refrigerator.

Chandler jeopardizes Joey's chances for the lead role in a TV series when he forgets to take down a message.

Brent and Lacey mentor high school students; Emma decides to be nicer to Oscar.

Brent helps Hank tear down a barn; Emma receives multiple manicures; David hires Wanda to snap pictures of him working.

There's no sound, but there sure are plenty of laughs; this crazy Quebec-based troupe uses the city as its stage, and its inhabitants, or victims, as characters.

There's no sound, but there sure are plenty of laughs; this crazy Quebec-based troupe uses the city as its stage, and its inhabitants, or victims, as characters.

Unassuming people enter a taxi cab as simple passengers taking a normal ride, only to be surprised when they discover that they're instant contestants; Adam Grove asks the passengers trivia questions as he escorts them to their destination.

Unassuming people enter a taxi cab as simple passengers taking a normal ride, only to be surprised when they discover that they're instant contestants; Adam Grove asks the passengers trivia questions as he escorts them to their destination.

Brent and Lacey mentor high school students; Emma decides to be nicer to Oscar.

Brent helps Hank tear down a barn; Emma receives multiple manicures; David hires Wanda to snap pictures of him working.

There's no sound, but there sure are plenty of laughs; this crazy Quebec-based troupe uses the city as its stage, and its inhabitants, or victims, as characters.

There's no sound, but there sure are plenty of laughs; this crazy Quebec-based troupe uses the city as its stage, and its inhabitants, or victims, as characters.

Unassuming people enter a taxi cab as simple passengers taking a normal ride, only to be surprised when they discover that they're instant contestants; Adam Grove asks the passengers trivia questions as he escorts them to their destination.

Unassuming people enter a taxi cab as simple passengers taking a normal ride, only to be surprised when they discover that they're instant contestants; Adam Grove asks the passengers trivia questions as he escorts them to their destination.

Brent and Lacey mentor high school students; Emma decides to be nicer to Oscar.

Brent helps Hank tear down a barn; Emma receives multiple manicures; David hires Wanda to snap pictures of him working.

There's no sound, but there sure are plenty of laughs; this crazy Quebec-based troupe uses the city as its stage, and its inhabitants, or victims, as characters.

There's no sound, but there sure are plenty of laughs; this crazy Quebec-based troupe uses the city as its stage, and its inhabitants, or victims, as characters.

Harris makes a big announcement; Ben is overwhelmed with family responsibilities.

There's no sound, but there sure are plenty of laughs. This crazy Quebec-based troupe uses the city as its stage, and its inhabitants, or victims, as characters! People are caught in a twisted yet funny web of comedic deception. This updated "Candid Camera" is a tad more risque and a little kookier with its practical jokes. The little snippets last only a few minutes, and some look more painful than others.

There's no sound, but there sure are plenty of laughs. This crazy Quebec-based troupe uses the city as its stage, and its inhabitants, or victims, as characters! People are caught in a twisted yet funny web of comedic deception. This updated "Candid Camera" is a tad more risque and a little kookier with its practical jokes. The little snippets last only a few minutes, and some look more painful than others.

There's no sound, but there sure are plenty of laughs. This crazy Quebec-based troupe uses the city as its stage, and its inhabitants, or victims, as characters! People are caught in a twisted yet funny web of comedic deception. This updated "Candid Camera" is a tad more risque and a little kookier with its practical jokes. The little snippets last only a few minutes, and some look more painful than others.

There's no sound, but there sure are plenty of laughs. This crazy Quebec-based troupe uses the city as its stage, and its inhabitants, or victims, as characters! People are caught in a twisted yet funny web of comedic deception. This updated "Candid Camera" is a tad more risque and a little kookier with its practical jokes. The little snippets last only a few minutes, and some look more painful than others.

Amy is devastated when Penny and Bernadette shop for wedding dresses without her.

Leonard and Penny spend time alone; Sheldon tries to face his fear of birds.

Sheldon is jealous when Stuart (Kevin Sussman), a guy from the comic book store, asks Amy out on a date.

Harris makes a big announcement; Ben is overwhelmed with family responsibilities.

Harris takes her anger out on Darlene; Dan and Louise spend an entire day in bed together.

Carrie fixes Spence (Patton Oswalt) up with an extremely timid girl from her office, but advice from Doug threatens a good thing.

Doug learns that Carrie was once the lover of the groom at a wedding they are attending; Arthur is unhappy when he doesn't get the entree that he ordered at the reception.

A barking dog means sleepless nights for Doug and Carrie; Arthur thinks that a popular comic strip is based on his life.

Doug forgets Carrie's 30th birthday and has plans to watch the wrestling match; Doug must scramble to put together a romantic evening.

Amy is devastated when Penny and Bernadette shop for wedding dresses without her.

Leonard and Penny spend time alone; Sheldon tries to face his fear of birds.

Leonard must face the bully who targeted him in high school; Penny confronts her past actions.

Refinery employees balance the conflicting personalities of a small town with the antics of a stressful workplace.

Sheldon is jealous when Stuart (Kevin Sussman), a guy from the comic book store, asks Amy out on a date.

Harris takes her anger out on Darlene; Dan and Louise spend an entire day in bed together.

Amy is devastated when Penny and Bernadette shop for wedding dresses without her.

Leonard and Penny spend time alone; Sheldon tries to face his fear of birds.

Sheldon is jealous when Stuart (Kevin Sussman), a guy from the comic book store, asks Amy out on a date.

Refinery employees balance the conflicting personalities of a small town with the antics of a stressful workplace.

Carrie fixes Spence (Patton Oswalt) up with an extremely timid girl from her office, but advice from Doug threatens a good thing.

Doug learns that Carrie was once the lover of the groom at a wedding they are attending; Arthur is unhappy when he doesn't get the entree that he ordered at the reception.

A barking dog means sleepless nights for Doug and Carrie; Arthur thinks that a popular comic strip is based on his life.

Doug forgets Carrie's 30th birthday and has plans to watch the wrestling match; Doug must scramble to put together a romantic evening.

Refinery employees balance the conflicting personalities of a small town with the antics of a stressful workplace.

Harris makes a big announcement; Ben is overwhelmed with family responsibilities.

Harris takes her anger out on Darlene; Dan and Louise spend an entire day in bed together.

Davis is locked in a jail cell to raise money for charity; Wanda tries to install a toilet.

Karen prepares an eyewitness testimony; Hank tries becoming a rodeo clown.

Karen and Davis try to uncover why Karen suddenly has violently angry feelings toward Hank; the citizens of Dog River are captivated by the Leroys' new swing; Brent, Wanda and Lacey butt heads over aromatherapy.

Hank is upset when Wanda replaces him as Corn Maze designer at the the Dog River Corn Festival; Emma and Oscar compete with Davis to see who can complete their volunteer task first; Brent and Lacey raise money by selling popcorn.

Unassuming people enter a taxi cab as simple passengers taking a normal ride, only to be surprised when they discover that they're instant contestants; Adam Grove asks the passengers trivia questions as he escorts them to their destination.

Unassuming people enter the Cash Cab as passengers expecting a normal taxi ride, only to discover they're on a game show.

Davis is locked in a jail cell to raise money for charity; Wanda tries to install a toilet.

Karen prepares an eyewitness testimony; Hank tries becoming a rodeo clown.

Karen and Davis try to uncover why Karen suddenly has violently angry feelings toward Hank; the citizens of Dog River are captivated by the Leroys' new swing; Brent, Wanda and Lacey butt heads over aromatherapy.

Hank is upset when Wanda replaces him as Corn Maze designer at the the Dog River Corn Festival; Emma and Oscar compete with Davis to see who can complete their volunteer task first; Brent and Lacey raise money by selling popcorn.

Unassuming people enter a taxi cab as simple passengers taking a normal ride, only to be surprised when they discover that they're instant contestants; Adam Grove asks the passengers trivia questions as he escorts them to their destination.

Unassuming people enter the Cash Cab as passengers expecting a normal taxi ride, only to discover they're on a game show.

Davis is locked in a jail cell to raise money for charity; Wanda tries to install a toilet.

Karen prepares an eyewitness testimony; Hank tries becoming a rodeo clown.

Karen and Davis try to uncover why Karen suddenly has violently angry feelings toward Hank; the citizens of Dog River are captivated by the Leroys' new swing; Brent, Wanda and Lacey butt heads over aromatherapy.

Hank is upset when Wanda replaces him as Corn Maze designer at the the Dog River Corn Festival; Emma and Oscar compete with Davis to see who can complete their volunteer task first; Brent and Lacey raise money by selling popcorn.

Mark fights for a spot in the Lanford High chamber orchestra; Jackie puts a lottery machine in the Lunch Box.

Carrie fixes Spence (Patton Oswalt) up with an extremely timid girl from her office, but advice from Doug threatens a good thing.

Doug learns that Carrie was once the lover of the groom at a wedding they are attending; Arthur is unhappy when he doesn't get the entree that he ordered at the reception.

A barking dog means sleepless nights for Doug and Carrie; Arthur thinks that a popular comic strip is based on his life.

Doug forgets Carrie's 30th birthday and has plans to watch the wrestling match; Doug must scramble to put together a romantic evening.

Amy is upset with Sheldon when he isn't impressed with her recent accomplishment; Howard struggles with Bernadette's aversion to children.

Everything could change when Leonard spontaneously invites Penny to a romantic dinner.

Penny and Leonard experiment with their new relationship; Raj forms a bond with his phone's virtual assistant.

Mark fights for a spot in the Lanford High chamber orchestra; Jackie puts a lottery machine in the Lunch Box.

Dan and Jackie take a road trip to a hardware wholesaler in Oklahoma; Darlene heads out of town and leaves behind a plethora of to-do notes for Becky and Ben.

Ross recruits some friends to go with him on his first meeting with Elizabeth's father (Bruce Willis); Phoebe makes Chandler and Monica paranoid by chronicling their every move.

Elizabeth and Ross decide to hide their relationship from her father and head up to his cabin for the weekend.

Chandler asks Phoebe to help him choose a special ring; Rachel urges Paul (Bruce Willis) to express his feelings.

In-laws (Jerry Stiller, Lisa Rieffel) displace Doug Heffernan (Kevin James) and his 70-inch TV from a basement lair; with Leah Remini.

Amy is upset with Sheldon when he isn't impressed with her recent accomplishment; Howard struggles with Bernadette's aversion to children.

Everything could change when Leonard spontaneously invites Penny to a romantic dinner.

Leonard starts to reconsider his friendship with Sheldon; Wolowitz tries to choose his astronaut nickname.

Sheldon goes to work with Amy in her neurobiology lab when the university forces him to take a vacation; Bernadette asks Howard to sign a pre-nup.

Penny and Leonard experiment with their new relationship; Raj forms a bond with his phone's virtual assistant.

Dan and Jackie take a road trip to a hardware wholesaler in Oklahoma; Darlene heads out of town and leaves behind a plethora of to-do notes for Becky and Ben.

Amy is upset with Sheldon when he isn't impressed with her recent accomplishment; Howard struggles with Bernadette's aversion to children.

Everything could change when Leonard spontaneously invites Penny to a romantic dinner.

Penny and Leonard experiment with their new relationship; Raj forms a bond with his phone's virtual assistant.

Sheldon goes to work with Amy in her neurobiology lab when the university forces him to take a vacation; Bernadette asks Howard to sign a pre-nup.

Ross recruits some friends to go with him on his first meeting with Elizabeth's father (Bruce Willis); Phoebe makes Chandler and Monica paranoid by chronicling their every move.

Elizabeth and Ross decide to hide their relationship from her father and head up to his cabin for the weekend.

Chandler asks Phoebe to help him choose a special ring; Rachel urges Paul (Bruce Willis) to express his feelings.

In-laws (Jerry Stiller, Lisa Rieffel) displace Doug Heffernan (Kevin James) and his 70-inch TV from a basement lair; with Leah Remini.

Leonard starts to reconsider his friendship with Sheldon; Wolowitz tries to choose his astronaut nickname.

Sheldon goes to work with Amy in her neurobiology lab when the university forces him to take a vacation; Bernadette asks Howard to sign a pre-nup.

Mark fights for a spot in the Lanford High chamber orchestra; Jackie puts a lottery machine in the Lunch Box.

Dan and Jackie take a road trip to a hardware wholesaler in Oklahoma; Darlene heads out of town and leaves behind a plethora of to-do notes for Becky and Ben.

Brent talks Hank into starting a blog; Lacey's friend gets her own cooking show; Wanda helps Davis with his taxes.

Brent realizes that Corner Gas may not actually be within the town of Dog River.

Karen is tasked with playing an online phone game for Fitzy while Wanda and Hank settle a bet with mini putt.

Oscar is disturbed to learn he and Emma have different notions about their final resting place; Wanda becomes obsessed with a productivity app while Lacey and Hank talk Brent into renovations.

Unassuming people enter the "Cash Cab" as passengers expecting a normal taxi ride, only to discover they're instant contestants on Discovery Channel's innovative science-themed game show.

Unassuming people enter the Cash Cab as passengers expecting a normal taxi ride.

Brent talks Hank into starting a blog; Lacey's friend gets her own cooking show; Wanda helps Davis with his taxes.

Brent realizes that Corner Gas may not actually be within the town of Dog River.

Karen is tasked with playing an online phone game for Fitzy while Wanda and Hank settle a bet with mini putt.

Oscar is disturbed to learn he and Emma have different notions about their final resting place; Wanda becomes obsessed with a productivity app while Lacey and Hank talk Brent into renovations.

Unassuming people enter the "Cash Cab" as passengers expecting a normal taxi ride, only to discover they're instant contestants on Discovery Channel's innovative science-themed game show.

Unassuming people enter the Cash Cab as passengers expecting a normal taxi ride.

Brent talks Hank into starting a blog; Lacey's friend gets her own cooking show; Wanda helps Davis with his taxes.

Brent realizes that Corner Gas may not actually be within the town of Dog River.

Karen is tasked with playing an online phone game for Fitzy while Wanda and Hank settle a bet with mini putt.

Oscar is disturbed to learn he and Emma have different notions about their final resting place; Wanda becomes obsessed with a productivity app while Lacey and Hank talk Brent into renovations.

Louise gets into a feud with Becky after accidentally sending a rude message in the family text thread; Darlene tries to spice up her sex life with Ben.

Ross recruits some friends to go with him on his first meeting with Elizabeth's father (Bruce Willis); Phoebe makes Chandler and Monica paranoid by chronicling their every move.

Elizabeth and Ross decide to hide their relationship from her father and head up to his cabin for the weekend.

Chandler asks Phoebe to help him choose a special ring; Rachel urges Paul (Bruce Willis) to express his feelings.

In-laws (Jerry Stiller, Lisa Rieffel) displace Doug Heffernan (Kevin James) and his 70-inch TV from a basement lair; with Leah Remini.

Sheldon and his nemesis, Kripke, compete for a corner office; Penny feels uncomfortable after receiving a gift from Amy.

Sheldon's routine is turned upside down when his barber gets sick; Wolowitz questions his decision to go into space.

Sheldon chooses to participate in a guys-only weekend Star Wars gaming marathon rather than go with Amy to her aunt's birthday party; he gets a lesson from Penny and Amy.

Louise gets into a feud with Becky after accidentally sending a rude message in the family text thread; Darlene tries to spice up her sex life with Ben.

Darlene figures out a new plan to afford Mark's college tuition; Jackie and Louise try to help Becky meet a new guy.

Monica and Chandler encounter Richard (Tom Selleck), Monica's former boyfriend, in a romantic restaurant.

Monica feels that Rachel is trying to steal the spotlight from her engagement; Chandler worries about his performance in the bedroom.

Monica learns what her parents have done with her wedding fund; Joey teases Rachel about her late-night reading material.

When one of Reggie's most prized possessions goes missing, he must gather all the suspects and uncover whodunit.

Sheldon and his nemesis, Kripke, compete for a corner office; Penny feels uncomfortable after receiving a gift from Amy.

Sheldon's routine is turned upside down when his barber gets sick; Wolowitz questions his decision to go into space.

When Penny buys Leonard and Sheldon "Star Trek" collectibles, Sheldon finds himself haunted by Mr. Spock; after a blind date, Raj believes he has met his future wife.

When Stephen Hawking comes to lecture at the university for a week, Wolowitz is given the task of maintaining his wheelchair, making Sheldon green with envy.

Sheldon chooses to participate in a guys-only weekend Star Wars gaming marathon rather than go with Amy to her aunt's birthday party; he gets a lesson from Penny and Amy.

Darlene figures out a new plan to afford Mark's college tuition; Jackie and Louise try to help Becky meet a new guy.

Sheldon and his nemesis, Kripke, compete for a corner office; Penny feels uncomfortable after receiving a gift from Amy.

Sheldon's routine is turned upside down when his barber gets sick; Wolowitz questions his decision to go into space.

Sheldon chooses to participate in a guys-only weekend Star Wars gaming marathon rather than go with Amy to her aunt's birthday party; he gets a lesson from Penny and Amy.

When Stephen Hawking comes to lecture at the university for a week, Wolowitz is given the task of maintaining his wheelchair, making Sheldon green with envy.

Monica and Chandler encounter Richard (Tom Selleck), Monica's former boyfriend, in a romantic restaurant.

Monica feels that Rachel is trying to steal the spotlight from her engagement; Chandler worries about his performance in the bedroom.

Monica learns what her parents have done with her wedding fund; Joey teases Rachel about her late-night reading material.

When one of Reggie's most prized possessions goes missing, he must gather all the suspects and uncover whodunit.

When Penny buys Leonard and Sheldon "Star Trek" collectibles, Sheldon finds himself haunted by Mr. Spock; after a blind date, Raj believes he has met his future wife.

When Stephen Hawking comes to lecture at the university for a week, Wolowitz is given the task of maintaining his wheelchair, making Sheldon green with envy.

Louise gets into a feud with Becky after accidentally sending a rude message in the family text thread; Darlene tries to spice up her sex life with Ben.

Darlene figures out a new plan to afford Mark's college tuition; Jackie and Louise try to help Becky meet a new guy.

Emma gives Davis and Wanda piano lessons; Lacey deals with a broken arm.

Brent discovers a newfound love of his childhood toys when Emma gives them to Hank.

It's Halloween in Dog River and Brent, Lacey, Wanda, and Hank face a possible haunting at Brent's house; Oscar and Emma realize angry teenagers are targeting them for pranks and recruit Karen and Davis to help them defend their home.

Brent, Lacey, Oscar, Hank, Davis, Karen, Wanda, and Emma are all getting a cartoon makeover as they return to Dog River for more adventures.

It's the trivia-based game show that happens in cab Grove's cab!

Unassuming people enter expecting a normal taxi ride.

Emma gives Davis and Wanda piano lessons; Lacey deals with a broken arm.

Brent discovers a newfound love of his childhood toys when Emma gives them to Hank.

It's Halloween in Dog River and Brent, Lacey, Wanda, and Hank face a possible haunting at Brent's house; Oscar and Emma realize angry teenagers are targeting them for pranks and recruit Karen and Davis to help them defend their home.

Brent, Lacey, Oscar, Hank, Davis, Karen, Wanda, and Emma are all getting a cartoon makeover as they return to Dog River for more adventures.

It's the trivia-based game show that happens in cab Grove's cab!

Unassuming people enter expecting a normal taxi ride.

Emma gives Davis and Wanda piano lessons; Lacey deals with a broken arm.

Brent discovers a newfound love of his childhood toys when Emma gives them to Hank.

It's Halloween in Dog River and Brent, Lacey, Wanda, and Hank face a possible haunting at Brent's house; Oscar and Emma realize angry teenagers are targeting them for pranks and recruit Karen and Davis to help them defend their home.

Brent, Lacey, Oscar, Hank, Davis, Karen, Wanda, and Emma are all getting a cartoon makeover as they return to Dog River for more adventures.

Neville confronts Jackie about loaning Dan money; Darlene attempts to play matchmaker for Mark.

Monica and Chandler encounter Richard (Tom Selleck), Monica's former boyfriend, in a romantic restaurant.

Monica feels that Rachel is trying to steal the spotlight from her engagement; Chandler worries about his performance in the bedroom.

Monica learns what her parents have done with her wedding fund; Joey teases Rachel about her late-night reading material.

When one of Reggie's most prized possessions goes missing, he must gather all the suspects and uncover whodunit.

Knowledge of Howard's sexual history makes Bernadette reconsider their future together.

Wedding plans are jeopardized when NASA reschedules Howard's mission; Leonard says something in the bedroom that surprises Penny.

The gang tries to help Wolowitz and Bernadette get married before the space launch.

Neville confronts Jackie about loaning Dan money; Darlene attempts to play matchmaker for Mark.

As Mark's graduation approaches, he considers his relationship with his father; Louise plans a big graduation ceremony at the Lunch Box.

Mary gets Pastor Jeff involved when Sheldon isn't invited to Billy's birthday party; George Sr. has male bonding time with Dr. Sturgis.

Sheldon fakes being sick to avoid a swim test at school; Dr. Sturgis spies on Meemaw's new boyfriend.