Sheldon dismantles the refrigerator to stop it from humming; he gets a paper route to pay for its repair.

Sheldon becomes jealous when Dr. Sturgis bonds with Paige, another ten-year-old genius; Mary invites Paige's family over for a playdate.

When Mary's faith is shaken by a tragedy in the community, Sheldon becomes an unlikely ally.

When George Sr. asks Sheldon to keep a secret from Mary, the stress of not being honest drives Sheldon to hide out at Tam's for his first sleepover.

Dr. Sturgis recommends Sheldon and Missy for a university research study on twins; Mary is unhappy when the test results go to Sheldon's head.

Phoebe prepares to give birth, but the doctor makes her nervous; Joey gets admitted in great pain; Monica plans a date with a male nurse to spite Chandler.

Ross' estranged bride makes him an offer; Phoebe deals with traumatic memories of PBS; Monica gets upset at Chandler when he gloats about sex; Joey challenges Phoebe to perform a completely selfless act.

An exchange between Ross and Rachel threatens to break up the friends; Chandler and Monica plan a romantic weekend getaway together; Joey finds out about Monica and Chandler.

Phoebe is surprised to discover that she enjoys wearing mink; Ross confronts Emily and she demands a divorce; Monica and Rachel are afraid of a hairy new neighbor, until they find out how handsome he is with his hair cut.

Personal habits clash when Ross moves in with Chandler and Joey; Phoebe dates a health inspector (Gregory Sporleder); Rachel schemes to get her new neighbor to ask her our on a date.

As the gang digests Monica's huge Thanksgiving meal, everyone reminisces about their worst Thanksgiving ever.

Ross becomes upset when someone at work takes his sandwich from the refrigerator and eats it; Joey finds himself in a mess when he tries to cover for Chandler and Monica's dating.

Phoebe helps the Salvation Army and learns some truths about New Yorkers; Rachel gets a date with her neighbor who has a close relationship with his sexy sister; Joey tries to write a play in which he can be the star.

Ross vows to try something new; Joey resolves to learn guitar from Phoebe; Rachel gives up gossiping.

Monica is put off by the laugh Chandler uses to impress his boss (Sam McMurray); Ross shocks everyone by dating Janice (Maggie Wheeler).

Phoebe meets her estranged father (Bob Balaban) at her grandmother's funeral; Joey's fondness for an expensive bag loses him an audition; Chandler tells perfectionist Monica that she is useless at massage.

Ross must prove to his boss that he is sane in order to return to work; Phoebe finds out about Monica and Chandler's relationship; Ross hunts for a new apartment.

Chandler gets nervous when everyone learns about Monica; Joey's new girlfriend gets physical; Ross moves into a new apartment but fails to impress his new neighbors.

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

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

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

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

All Elite Wrestling continues to inject new spirit, freshness and energy into mainstream wrestling featuring a world-class roster of diverse male and female wrestlers.

Friends with Benefits might have a problem committing to each other but when it comes to the Wipeout course and the $25,000 prize, they are all in.

The Jokers play unprofessional actors in a fake commercial then make wild assumptions about other mallgoers; one Joker breaks and is tasked with becoming the strictest security guard imaginable in his punishment.

The Jokers pretend to be medical students in training with standardized patient actors, then play the hero and break up a public fight, hoping to earn applause; one Joker has to put his hips where his mouth is and settle a bet of his own making.

Phil gets a new RV for a fun family road trip; Jay and Gloria search for Manny's backpack; Lily's gymnastics meet brings out Cam and Mitch's competitive spirit.

After Phil's mother dies, everyone flies down to Florida; Gloria is faced with an outstanding arrest warrant; Jay runs into someone from his past.

Phil and Claire try to orchestrate a kid-free week during Luke, Haley and Alex's summer activities; Cam and Mitch try to have a memorable summer.

Luke and Manny have their first day of high school; Claire starts work at Jay's company but worries it's not a real job; Mitch juggles an important meeting and Lily's first day of preschool.

Phil's job takes up a lot of his time; Luke has his friends over for a poker game; Gloria worries the baby is cursed; Cam hosts a funeral for the cat's imaginary wife.

When Cam's sister comes to visit, he tries to find a gentle way to break the news of his engagement; Phil and Claire decide to miss one of Luke's games; Gloria is in denial about needing glasses.

The adults struggle to make it to a hot new restaurant in time for the reservation Jay pulled a lot of strings to get.

Jay and Manny oppose Gloria's decision to hire a male nanny; Phil and Jay try to cheer up Frank; Mitch and Cam ask Pepper to help plan their wedding.

The family goes to the annual school fair; Phil and Claire each plan a separate surprise for their 20th wedding anniversary; Haley has an awkward encounter.

Claire encourages Jay to go to ClosetCon, where he is reunited with former colleagues; for the first time, Cam takes Lily and Mitch to the Tucker farm.

Cam is extremely focused -- and ruthless -- as a big football game approaches; Claire wants to prove herself at work; Phil tries to teach his children about optimism.

Jay and Manny set out to cut down their own Christmas tree; Gloria is on edge when her mother visits; Mitchell does last-minute shopping to find the perfect gift for Lily.

Phil ends up in jail after tricking Luke into taking a dance class; Jay and Gloria plan birthday parties for Manny and Joe; Mitch and Cam try to book a wedding venue.

Gloria has an encounter with a mean mom (Jane Krakowski) during the high school open house; Mitchell meets a judgmental neighbor (Jesse Eisenberg); Alex goes to a therapist.

Mary clashes with Sheldon's drama teacher Mr. Lundy over plans for a Halloween haunted house fundraiser for the church; Georgie falls for a rebellious teenage girl whom Sheldon is tutoring.

Sheldon gets into trouble with fellow child genius Paige at the science museum; George Sr. is forced to play therapist to Paige's bickering parents; Mary, Georgie and Missy help Meemaw with a garage sale.

A video game takes over Sheldon and Meemaw's life; George Sr. is jealous when Georgie bonds with Herschel at the auto shop.

Sheldon studies his family for a psychology project; a Thanksgiving dinner turns into a family fight when George Sr. is offered a job in Oklahoma.

When Sheldon learns that people with stunted childhoods can turn into social outcasts, he tries to act like a kid; Meemaw and Dr. Sturgis' relationship is tested when she teaches him how to drive.

Sheldon experiments on Missy; Georgie joins Mary's bible study to spend more time with his crush, Veronica.

Phoebe finds a police officer's badge and goes on a spree of arrests until she meets up with the owner; Joey thinks he's in love with Monica; Ross buys a couch but won't pay to have it delivered.

Rachel worries about a kiss she gives to a job interviewer; Monica observes Phoebe's romantic bliss; Joey is arrested for stalking a sexy neighbor.

Rachel tries to impress her boss by smoking, which gives Chandler fond memories of his former addiction; Ross's son and Joey audition for the same part in a commercial.

Ross competes with Chandler for the attentions of a pizza deliverywoman (Kristin Dattilo-Hayward); Joey discovers that his guest-starring role on "Law & Order" was cut while watching the show with his proud grandmother.

Joey tries to save Ross' life when he thinks he hears gunshots while on patrol with Phoebe's police officer boyfriend.

Monica interrupts Joey and Ross' friendly game of catch; Gary (Michael Rapaport) asks Phoebe to move in with him.

Joey lands his first lead role and finds his movie crew in a bind; Rachel gets an eye infection; Phoebe can't quite remember why she hates Ross.

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.

Ross seeks Phoebe's advice to help him sort out the legal status of his relationship with Rachel; Monica and Chandler plan to move in together.

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.

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

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.

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.

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.

An obese scientist drops the pounds and his poor self-image when a secret formula turns him into a slender ladies man.

In an attempt to remove Buddy Love from his subconscious, professor Klump (Eddie Murphy) accidentally creates him as a separate person.

Haley turns the tables when Claire and Phil try to talk with her about her future; Jay receives news from his friend Shorty; Cam and Mitch go on a romantic date.

Claire and Phil spy on Luke and Manny; Jay misinterprets Gloria's anger over a dream she thinks he had for another offense he committed; Mitch tries to keep a secret from Cam; Haley tries to keep her photography exhibit from her family.

Luke competes against the son of Phil's nemesis (Rob Riggle) in a wrestling match; Cam and Mitch ask Claire to pick up Lily from school without mentioning the recent lice incidence in her class; Gloria chaperones a field trip.

Cameron feels competitive when a popular teacher returns from sabbatical; Haley goes to a realtor's banquet with Phil; Mitch struggles to get his bearings at his new job; Jay and Gloria babysit Lily.

Jay takes Luke to the garage for some male bonding; Gloria and Claire take Lily dress shopping; Mitch, Cam, Alex and Manny spend a day at the museum; Phil helps Andy make an anniversary gift for his girlfriend.

Jay is determined to get the adults' hotel suite upgraded; Claire tries to win back some money; Phil auditions to be a magician.

When Sheldon has to spend a few days in the hospital, he turns into the world's worst patient; Missy gets a taste of what life would be like without her twin.

Sheldon attempts to build a nuclear reactor; a university cocktail party gets heated when Dr. Sturgis' colleague flirts with Meemaw; Georgie is heartbroken when he learns Veronica has a boyfriend.

Sheldon uses his new friendship with the school bully to boss Georgie around; Missy steals Meemaw's makeup for picture day.

Sheldon and Dr. Sturgis have their first fight when Dr. Sturgis marks an answer wrong on Sheldon's test; Mary takes over for Pastor Jeff when he's out sick.

Things spiral out of control when Sheldon boycotts his favorite bread company; Georgie offers Veronica a shoulder to cry on when she's dumped by her boyfriend.

Inspired by his hero, Albert Einstein, Sheldon tries his hand at the violin; Mary and Meemaw secretly buy a pregnancy test when Mary thinks she's pregnant.

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

While Monica helps Rachel move out, the two women have a war of words; Chandler says a "financial" adios to Joey.

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.

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.

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.

Discovered by record executive Clive Davis, Whitney Houston rises to fame in the 1980s to become one of the greatest singers of her generation.

A handsome angel (Denzel Washington) saves a New York Baptist preacher (Courtney Vance) and his wife (Whitney Houston) from spiritual doubt and marital woe.

While his wife is away on business, a college football coach must handle the chaos surrounding his 12 children.

Sal, Q and Murr are crashing and burning into product displays and hiding in tight spaces, but one of them must face the music with celebrity guest Bret Michaels.

The jokers give unsolicited etiquette advice and live tape strange product reviews; one lucky joker takes all the blame for celebrity guest Post Malone.

From working remotely to pitching unconventional business ideas with Steve Byrne, one Joker has a shot at winning a pair of highly sought-after sneakers thanks to NBA star Anthony Davis.

Joined by John Mayer, the Jokers must convince unsuspecting temps to accompany them to a business dinner; the losing Joker has to face the wrath of angry Mayer fans in a humiliating punishment.

Sal, Q, and Murr fall head over heels for someone they just met; a heated debate with pro wrestler MJF; a Joker discovers an untapped clairvoyant talent they possess with guest star Kesha.

A special episode hosted by Casey Jost and former NFL player Eddie Jackson as they spend time reviewing nail-biting clips of never-before-seen moments from Season 10.

Unable to pull off this week's pickleball and coffee shop challenges, the losing Jokers are forced to participate in an overseas game show hosted by special guest Paul Scheer.

The jokers are posing as salesmen and must sell their bizarre products to focus group participants, then attempt a challenge that turns out to be a mouthful; Sal finds himself in a stinky situation in tonight's punishment with guest star Kal Penn.

Soon after their blind date goes disastrously wrong, two single parents (Adam Sandler, Drew Barrymore) and their children end up sharing a suite together at an African resort.

Discovered by record executive Clive Davis, Whitney Houston rises to fame in the 1980s to become one of the greatest singers of her generation.

A handsome angel (Denzel Washington) saves a New York Baptist preacher (Courtney Vance) and his wife (Whitney Houston) from spiritual doubt and marital woe.

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

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

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.

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.

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

Separated from her Southern husband, an engaged New York fashion designer confronts him about a divorce.

Barbie and Ken are having the time of their lives in the colorful and seemingly perfect world of Barbie Land. However, when they get a chance to go to the real world, they soon discover the joys and perils of living among humans.

Soon after their blind date goes disastrously wrong, two single parents (Adam Sandler, Drew Barrymore) and their children end up sharing a suite together at an African resort.

A senatorial candidate (Ralph Fiennes) falls for a chambermaid (Jennifer Lopez) after he mistakes her for a guest (Natasha Richardson) at the hotel.

The jokers are dishing out as waiters and later grilled by news anchor Rosanna Scotto; finally, the losing joker is in for a horrific treat with guest star Bruce Campbell.

Q, Sal, and Murr pose as cash-grabby waiters and later as embarrassing parents; after the losing Joker is forced into a far-out focus group punishment with special guest, and so-called Ganja Weasel, Blake Anderson.

Q, Sal, and Murr coax their trainees to secure donations through unusual ways; they discipline their kids with the help of fellow shoppers; Murr runs rampant as a Tailor-zilla at a bridal shop with guest star Bobby Moynihan.

Finding out whether the team can make it as film directors; celebrity guest Paula Abdul hosts a dinner for her fans, and Sal is in attendance.

Sal, Q, and Murr are put to the test; first as tv producers, then as product inventors, while the losing Joker won't be tooting his own horn, celebrity guest Roy Wood Jr. will.

The Jokers must send bizarre texts and pose as security guards, doing and saying whatever they're told; the losing Joker will be part of an elf orientation hosted by guest star Michael Ian Black.

Mitch struggles to hide his genuine feelings about an unflattering wedding topper Cam's father made; Phil tries to help Gloria sell the apartment she had before Jay but they get sidetracked at a salon; Jay wants to host a nice family evening.

The family joins Phil as he travels to Australia to fulfill his mother's wish that he see the land where he was conceived.

Phil cannot handle the stress when he tells Claire an elaborate lie; Gloria is tasked with organizing this year's family portrait; Jay covertly enters Stella in a dog show.

Jay, Gloria and Manny challenge one another to try something new; Mitch and Cam sell a couple of their prized possessions to fund the wedding; the kids play a joke on Phil and Claire.

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.

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.

Barbie and Ken are having the time of their lives in the colorful and seemingly perfect world of Barbie Land. However, when they get a chance to go to the real world, they soon discover the joys and perils of living among humans.

Separated from her Southern husband, an engaged New York fashion designer confronts him about a divorce.

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 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.

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.

Raj faces his loneliness when his friends are out on dates; while in space, Wolowitz gets drawn into a fight between Bernadette and his mom.

Sheldon tries to intervene when he learns that Penny is thinking about breaking up with Leonard; Howard is picked on in space by the other astronauts.

Amy feels threatened by Sheldon's new assistant; Wolowitz starts to feel the pressures of being in space.

Wolowitz's return from space isn't all he expected; game night becomes a gender war.

The gang heads to Stuart's comic book store to celebrate Halloween; Leonard uses science to seduce Penny.

A game threatens Sheldon's relationship with Stephen Hawking; Penny secretly signs up for a college class.

Bernadette wants Wolowitz to move out of his mom's house; Sheldon is caught in the middle of Amy and Wil Wheaton's argument.

Two New Yorkers accused of murder in rural Alabama while on their way back to college call in the help of one of their cousins, a loudmouth lawyer with no trial experience.

Two New Yorkers accused of murder in rural Alabama while on their way back to college call in the help of one of their cousins, a loudmouth lawyer with no trial experience.

Steve gets a make-over in preparation for Laura's sorority auction; Carl is threatened by Harriette's promotion.

Urkel tags along when Carl goes duck hunting with his boss; Laura loses her mother's earrings.

Eddie feels obliged to escort Myrtle to the ball after she saves his life.

Laura drinks too much at a fraternity party; Carl and Harriette make conflicting surprise plans for their anniversary.

Sheldon moves in with Dr. Sturgis for the weekend to see what his life will be like in college; a lonely Mary tries to bond with the other Coopers during Sheldon's absence.

Unhappy that school funds are going toward football rather than academics, Sheldon decides to run for class president.

Georgie is thrilled when Veronica stays at the Coopers' house for a few days; Meemaw and Dr. Sturgis celebrate their one-year anniversary.

The Coopers help Pastor Jeff through a rough patch in his marriage; Sheldon pressures church members for donations when Mary takes him to work for a day.

Sheldon invites the entire school to a party for the Nobel Prize announcements; Meemaw learns more about Dr. Sturgis' past; Georgie's desire for cable TV leads to a standoff between him and George Sr.

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

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

Chandler continues to pretend to hate the idea of marriage, unaware Richard wants Monica back; Rachel and Phoebe discuss their backup plans.

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.

Chandler's efforts to bond with Monica's father (Elliott Gould) backfire during a racquetball game; Rachel tries to teach Joey how to sail; Monica tries to replicate Phoebe's grandmother's cookie recipe.

Rachel considers hiring an inexperienced but handsome man over a better qualified woman as her executive assistant.

Rachel makes her handsome new assistant (Eddie Cahill) hang out with Joey rather than the women in her office.

Monica makes Chandler apologize to an old girlfriend (Stacy Galina) for leaving her because she was fat; Monica struggles to select a maid of honor.

Ross' doctoral dissertation is stored in a remote corner of the university library frequently used by students having sex; Rachel and Phoebe bond with Joey's date (Kristin Davis), then try to convince him to continue seeing her.

Joey may have ruined Rachel's chances with Tag (Eddie Cahill) when he opens his mouth during Thanksgiving dinner.

Rachel finds it embarrassing that she is paying the way for her hunky new boyfriend (Eddie Cahill), who is also her assistant at work.

Ross' attempts to introduce his son, Ben, to Hanukkah are thwarted by the tyke's like of all things Christmas.

Raj and Howard try to figure out why Sheldon disappears at 2:45 every afternoon; jealousy arises in Penny and Leonard's relationship.

Sheldon and Wolowitz's fight over a parking spot at the university impacts the whole gang.

When Amy gets sick, Sheldon tries to nurse her back to health; Wolowitz and his father-in-law plan a fishing trip.

During a game, Sheldon revisits Christmas memories; Amy, Penny and Bernadette look for a date for Koothrappali.

When Sheldon is accused of sexual harassment, he ends up getting Raj, Leonard and Wolowitz in trouble.

As the guys don costumes and go on a road trip to a comic book convention, the ladies decide to stay home and try to interpret a comic book.

Sheldon faces a crisis of confidence when he is forced to work with his nemesis, Barry Kripke; Raj and Howard buy expensive action figures of themselves.

A fight between Sheldon and Leonard impacts Amy and Penny's living arrangements; while Howard is away, Raj helps Mrs. Wolowitz out.

The guys search for a perfect Valentine's Day gift for their significant others; Stuart and Raj host a "lonely people" party at the comic book store.

After a bad date, Koothrappali decides to never leave his apartment; Penny's acting skills impress Sheldon.

Leonard, Sheldon and Wolowitz talk to junior high girls about science-related careers; Raj plans a date with Lucy.

Howard considers whether or not he should open a letter from his father; Penny and Leonard host a "grown-up" cocktail party.

The girls get involved when Leonard, Sheldon and Raj compete for tenure at the University.

Amy tries to help Sheldon get over his compulsive need for closure when one of his favorite TV shows is canceled; Raj discovers a secret about Lucy.

Leonard and Sheldon hire the host (Bob Newhart) of their favorite childhood TV show to perform; Bernadette and Howard run into trouble while dog-sitting for Raj's pet.

Francine tries to be a better friend to one of Roger's personas who is selling her homemade jeans on TV; Stan and Steve swap eyebrows.

Steve introduces Stan and Francine to Barry's parents and Steve regrets it; Roger goes blind.

Stan becomes obsessed with a 1960s television show after picking up a secondhand TV; Roger decides to live as a baby and the family cares for him.

Jeff gets lucky and wins a tour through a mysterious weed factory; he decides to bring Stan along for the tour.

Roger breaks up Steve's friendship with Snot, Barry and Toshi; Jeff realizes he has a flair for house flipping and gets Stan, Francine and Hayley involved.

Stan has Roger pretend to be a shark to help Steve overcome his fears; Hayley's friend, Danuta, becomes romantically interested in Klaus.

Hayley and Jeff move into a van and start living life on the open road; Francine and Steve are haunted by a rideshare driver that they rated poorly.

Steve goes undercover as a school hall monitor; Roger and Stan go catatonic after witnessing a grisly escalator accident.

Jeff is forced to take Francine out for a not-so-wild night on the town; Klaus forces Steve to watch his celebrity impressions.

Francine helps Hayley take a break from their marriages; Stan and Jeff pretend to be frontiersmen.

For Eddie's (Darius McCrary) 21st birthday bash, Urkel (Jaleel White) mistakenly uses his little black book for the guest list.

A scientific accident leaves Urkel with the ability to read minds; Carl becomes troop leader of the Junior Woodsmen.

The ventriloquist dummy Stevil and his new friend Carlsbad haunt Urkel and Carl.

Stephan and Urkel trade places to test Laura's feelings; Eddie tapes the police department for a school project.

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 is forced to take a break from science when his new obsession with "The Lord of the Rings" leads to an unhealthy habit; Missy asks George Sr. to teach her how to play catch.

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.

Phoebe and Joey are at odds when she tries to cancel their weekly dinner plans so she can meet an old beau.

During their first night together, Rachel and Tag realize they forgot to ship out an important package at the office.

On her first day as a telemarketer, Phoebe encounters a distraught man (Jason Alexander) who is determined to end his life.

Celebrating Rachel's 30th birthday inspires the friends to reminisce about their own 30th birthdays -- Joey got angry with God for breaking their deal; Ross bought a sports car; Monica got drunk and embarrassed herself at her surprise party.

Joey accidentally informs a cast member (Susan Sarandon) that she will be fired so that his character will get her character's brain.

Monica and Chandler fondly reminisce about London until a startling revelation leaves Chandler floored.

Monica regrets telling a woman about a discount bridal shop when they end up competing for a wedding dress.

Joey is overjoyed to be nominated for a "Soapie" award; engaged Monica frets when she realizes she will never experience the thrill of a new relationship again; Ross spots Chandler sneaking out of a male strip club.

Joey auditions for a big role which will require him to appear naked; Rachel and Phoebe plan Monica's bridal shower; Ross and Monica's attractive cousin visits and stirs the passions of all men who meet her.

A college friend with whom Rachel shared an embarrassing and passionate moment shows up at Central Perk; Chandler and Ross argue for possession of Val Kilmer's tuxedo; Joey drives Monica crazy over the wedding schedule.

With only four weeks until their wedding, Monica and Chandler try to write their vows; Chandler enlists the boys' help, while Monica does the same with the girls.

Trying to ensure an ideal wedding, Monica arranges a meeting so Chandler and his estranged father can reconcile.

On the eve of the wedding, Ross searches for missing Chandler, who has doubts, while the girls distract unsuspecting Monica.

Amy and Sheldon's relationship takes a surprising turn during a game of "Dungeons & Dragons"; Lucy and Koothrappali have an awkward date.

When Leonard receives an exciting opportunity to work overseas, Penny and Sheldon are thrown for a loop.

Sheldon and Penny share secrets while Leonard is away; Wolowitz helps Raj get over his ex.

Leonard and Sheldon's friendship is tested; Wolowitz's relationship with his mom causes a threat to his masculinity.

Raj designs a scavenger hunt that brings out the best -- and the worst -- in the whole gang.

Sheldon wants revenge after Amy ruins one of his favorite films; Leonard finds a way to get Penny to do anything; Stuart and Raj make online dating profiles.

Sheldon and Amy's relationship is tested when she takes a job at his university; a fight with Bernadette leaves Howard sleeping on Raj's couch.

Sheldon's latest scientific breakthrough leaves him feeling like a fraud; a romantic gesture between Howard and Bernadette causes Penny to up her game with Leonard.

When Professor Proton asks Leonard for help with an experiment, Sheldon retaliates by befriending Proton's rival, Bill Nye.

Following the three rounds and three-stage obstacle course, consisting of multiple strategy and decision points designed to further challenge and wear out the stamina of the competitors.

When a mistake comes to light, Sheldon makes Leonard walk a mile in his shoes; Penny decides to confront Raj's ex.

When the gang decides to spend Thanksgiving at Mrs. Wolowitz's house, Sheldon protests; Leonard and Penny deal with an error from her past.

Amy and Leonard try to help Sheldon deal with his shame; Raj stays with Bernadette and Howard for a week.

While Sheldon is in Texas, the rest of the gang realize how much he has changed their lives as they decorate the apartment Christmas tree.

A series of crises on Mitch and Cam's wedding day put Pepper to the test; Phil gets an eye procedure before the celebration; Claire embraces the role of best woman.

Chaos forces Mitch and Cam to move from one contingency plan to another, but an unexpected turn of events allows the day to move forward.

When Alex returns from a humanitarian trip, the family dynamic shifts; Cameron remains in a lovey-dovey mood even after the honeymoon ends; Gloria gives Jay a taste of his own medicine after noticing the lack of effort he puts into his appearance.

Jay and Gloria can't agree on what kind of anniversary gifts they want to exchange; the Dunphys go with Alex to Caltech for her college tour; Mitch, Cam and Lily take a new family portrait.

Phil must make creative edits in Cam and Mitch's wedding video when footage reveals that Phil is responsible for a terrible cold that has plagued the family; Gloria and Jay try to help Manny cope with stress in different ways.

The Dunphys stay in a cramped hotel room while the house is treated for mold; Gloria feels protective when Manny starts dating an older girl; Cameron wants to maintain his team's winning streak but fears Mitchell is a jinx.

Phil and Claire panic when an obnoxious couple looks at the house for sale next door; Jay learns Manny's girlfriend is the granddaughter of a business rival -- after forbidding Manny to see her; Cam and Mitch are scared of Lily's teacher (Tyne Daly).

When Claire lets Phil take charge of Halloween, he decides to do something different than her usual fright-fest theme; Jay wants to be Prince Charming for Halloween -- complete with a full head of hair; Cam becomes overwhelmed.

Phil and Claire aren't sure what to think when Haley and Andy start spending a lot of time together; Gloria hires a Spanish tutor for Manny; Cam and Mitch run into a popular journalist at a school function.

With Phil and Luke cooking Thanksgiving dinner, Claire decides to prepare a secret back-up turkey; Jay and Gloria's trip is canceled at the last minute; Lily refuses to wear a nice dress to dinner.

Claire and Phil worry that Alex's boyfriend is imaginary; Manny might ruin Jay's plan to avoid attending a party; Mitch and Cam's new white couch becomes a mishap waiting to happen.

The whole family takes Haley to a bar to celebrate her 21st birthday; Phil and Jay hit a snag while trying to pick up Haley's present; Lily asks Alex, Luke and Manny where babies come from.

When a near-death experience leads to several members of the family deciding to make life changes, the rest of the clan bears the brunt of their new attitudes.

Phil calls in his father and his retired friends to help in a war with the neighbors; Jay and Gloria disagree over Joe's potty training.

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.

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.

George Sr. and Meemaw struggle to manage the Cooper household; Mary plans Pastor Jeff's wedding.

Sheldon learns to listen when an emotional Paige struggles with her parents' divorce; George Sr. is furious when Georgie tries to buy his way out of chores.

George Sr. and Georgie go camping with Meemaw's new boyfriend, but things get complicated when her ex-boyfriend tags along; Sheldon and Missy invent a game.

Ross tries to find Chandler with Phoebe's help; Rachel tries to hinder Monica.

The reception following Monica and Chandler's wedding is almost upstaged by the news that a member of the group might be pregnant.

The gals speculate about the father of Rachel's baby, the guys scramble after Chandler loses the film from his wedding.

The real father of Rachel's baby is revealed; Monica and Chandler struggle to make their honeymoon flight.

Ross and Rachel argue over how they ended up in bed together weeks earlier, so Ross announces he has the encounter on tape.

Ross is horrified when Rachel goes on a date with a soap-opera star (Johnny Messner); Phoebe is attracted to a clumsy chef whom Monica wants to fire.

At Monica's Halloween party, Phoebe meets her twin sister's fiance and finds that she is attracted to him.

Rachel wants to find her own apartment; Phoebe is ecstatic when Eric (Sean Penn) dumps Ursula to date her.

Chandler finds out that Monica had a bachelorette party, even though they promised not to have parties; Rachel takes Phoebe along to dinner with Rachel's dad, because she is afraid he will be angry when she tells him she's pregnant.

Monica encounters a high-school friend (guest star Brad Pitt) and invites him to Thanksgiving Day dinner.

Chandler is aghast when Monica buys expensive boots; Phoebe discovers that Ross' son attends school with Sting's son.

Ross' new girlfriend wants to put their photograph on Christmas cards; Rachel eyes Joey as a possible partner.

Rachel and Joey might become more than friends; Chandler sets a Ms. Pac-Man record; Ross breaks land-speed records.

As Leonard tries to help Penny with a disappointment, Penny asks him a bold question about their relationship; Sheldon wants to learn how to be funny.

Sheldon must learn how to relax when he is forced to take a vacation; Leonard tries to support Penny when she quits her job; Bernadette needs to replace one of Stuart's comic books.

Unable to get Comic-Con tickets, Sheldon tries to hold his own convention and ends up spending a wild evening with James Earl Jones; the ladies try to act maturely.

Sheldon and Amy go on a trip to wine country with Howard and Bernadette; Penny and Leonard rush Raj's dog to the vet.

When Leonard buys a dining room table, Sheldon re-evaluates the changes in his life; Bernadette is torn when Wolowitz gets the chance to go back to space.

Bernadette tries to negotiate peace between Sheldon and Wolowitz; Penny receives an embarrassing offer; Raj wants Amy to write to a woman on his behalf.

Sheldon is faced with a new reality when he visits his mom in Houston; a murder mystery party starts arguments.

All Elite Wrestling continues to inject new spirit, freshness and energy into mainstream wrestling featuring a world-class roster of diverse male and female wrestlers.

Following the three rounds and three-stage obstacle course, consisting of multiple strategy and decision points designed to further challenge and wear out the stamina of the competitors.

The Jokers mix it up at an after-dark social event, and try getting park-goers to sign up for bizarre subscriptions; the losing Joker gets into an unforgettable battle of the sexes with special guest Kim Fields.

The Jokers ask random park goers to watch their grandma while they make a quick errand, then a fake documentary interviews them; the losing Joker gets dressed as a clown and punished by the other Jokers and returning special guest, Eric Andre.

When Phil thinks Luke is giving him the cold shoulder, Andy becomes Phil's new right-hand man; Jay is put in a tough spot when it is suspected that Joe is allergic to Stella; Mitchell does some freelance legal work at Jay's company.

Claire senses Phil may be more into "Juliana" than her; Gloria's sister visits; Mitchell and Cameron get into a situation with Anders.

Claire takes a first class seat on a flight, leaving Phil in coach; Gloria makes Jay teach Manny how to defend himself; Mitch, Cam and their friends throw Sal a belated baby shower.

While stuck at the airport, Claire partakes in online snooping that creates drama with the rest of the family.

When their competitor releases a catchy ad, Claire and Jay scramble to shoot a commercial of their own; Phil, Luke and Manny try to take down a drone that a neighbor keeps using to spy on Gloria; Andy is rushed to the hospital.

Claire tackles spring cleaning; Phil has a difficult time when Luke seems to outperform him at many things; Haley tries to distract Alex by taking her to a music festival; Gloria attends Cameron's faculty talent show.

Phil is excited to give Jay a high-tech outdoor grill for his birthday; Claire and Mitchell propose a gift idea they don't expect Jay to accept; Luke and Manny are taught a lesson about drinking; Andy becomes awkward around Haley and her boyfriend.

Jay agrees to sub in on Cam's bowling team, not knowing it's an all-gay league; Phil and Clair have an unexpectedly nice time with their neighbors; Gloria and Mitch agree to go out with Haley.

Claire won't let Phil buy a video game console; Jay and Gloria get into a disagreement over the types of toys Joe plays with; Haley wants to stand up for herself at work; Claire attempts to bribe the school principal.

When Alex learns she must share the Valedictorian title with a competitor, the principal lets them break a tie with a one mile run; Gloria studies for her citizenship test; Mitch and Cam join a protest against a local restaurant.

Phil, Luke and Haley force Alex to celebrate senior ditch day; Claire gets a job offer from a hotel chain; Gloria takes advantage of Manny's groggy state after his wisdom teeth procedure.

Unexpectedly stuck in Seattle, Phil figures out how to be at Alex's graduation party via video chat and a robotic vessel; Claire worries about giving Alex the perfect gift; Mitch doesn't tell Cam about being laid off.

Haley and Andy deal with their emotions in different ways; finding a preschool for Joe is more difficult than Jay and Gloria anticipated; when money gets tight, Cam wants Mitch to return to his former job.

Phil and Claire are hurt when Alex lies about her college move-in date and Luke doesn't want to spend the day at Phil's open house; being landlords stresses out Mitch and Cam.

Sheldon and Georgie mine for platinum in roadside gravel; Mary is concerned when Missy misuses religion to help with a batting slump.

Meemaw meets Dale's ex-wife, June; Sheldon is forced to work on a group project with reluctant college students.

Sheldon visits the California Institute of Technology for the very first time; Georgie is furious when Mary listens in on a phone call with his girlfriend; Meemaw tries to cheer up a jealous Missy.

Dr. Sturgis is furious when Sheldon accuses him of plagiarism; Mary sets out to find a girl trophy for Missy's end-of-season baseball ceremony; Georgie has an awkward run-in with Veronica while on a date with his new girlfriend, Jana.

When George Sr. accidentally lands the school librarian in the hospital, the Cooper family must nurse her back to health; Meemaw gives Georgie relationship advice.

When Sheldon learns the house next door is for sale, he takes it upon himself to find the perfect neighbors; Missy is torn when she's forced to pitch against her boyfriend at a baseball game.

Joey might declare his love for Rachel, or Phoebe; Rachel breaks a pact with Ross; Chandler becomes mister bubble bath.

Joey realizes his intense feelings for Rachel are excluding Ross from the joys of impending fatherhood.

Monica prepares a memorable St. Valentine's Day for Chandler with sexy lingerie and X-rated entertainment.

Joey confesses his true feelings for Rachel; Phoebe introduces Monica to her new boyfriend (Harry Van Gorkum).

Rachel devises a lie about her unborn child that she hopes will break the silence between her and Joey; Phoebe reads tea leaves and predicts she will soon encounter the man of her dreams.

Phoebe brings her annoyingly upbeat boyfriend to the 35th anniversary of Monica and Ross' parents, who urge Ross and pregnant Rachel to pretend to be married.

When Soap Opera Digest requests an interview, Joey enlists his friends to make sure he does not say anything that could cost him his role.

During her baby shower, Rachel realizes she is unprepared to be a mother and accepts her mother's (Marlo Thomas) offer to move in to help with the child.

A food critic blasts Monica's cooking in a newspaper review; a cute saleswoman riles Rachel when she flirts with Ross; Phoebe coaches Chandler for a job interview.

Monica and Phoebe make a bet after Rachel passes her delivery date; Chandler falls asleep at the premiere screening of Joey's new film.

Rachel goes into labor, enduring endless pain while anxious Ross hovers nearby and her waiting friends wreak havoc in the hospital.

After Rachel gives birth to her baby, she must confront relationship issues around her.

Joey finds himself engaged to Rachel soon after she delivers her baby girl, while Phoebe assumes Ross is the one who proposed; Joey sneaks a peek as Rachel tries unsuccessfully to nurse; Monica and Chandler retire to a supply closet for privacy.

Raj struggles with guilt when he dates two women at once; Penny has a chance to play a part in a cheesy movie; Sheldon is torn between two gaming systems.

Sheldon has a personal crisis when he decides string theory is a waste of his time; a double date ends in embarrassment for Howard.

Sheldon gives spontaneity a try, which causes unexpected friction for Penny, Bernadette and Amy; Raj asks Howard for help with preparation for a date with Emily.

Professor Proton (Bob Newhart) helps Sheldon deal with grief; Leonard gets into a competition with Penny; Bernadette and Amy prepare a "Star Wars Day" gift for the guys.

A bad day compels Penny to re-evaluate her choices -- including Leonard; Bernadette and Howard must care for Mrs. Wolowitz; Sheldon gives Raj advice on relationships.

Faced with an uncertain future, Sheldon considers a major change; Emily and Raj decide to take things to the next level.

Leonard and Amy make an unexpected trip to Arizona to fetch Sheldon; Penny interviews for a job at Bernadette's company; Stuart's relationship with Mrs. Wolowitz disturbs Howard.

When Sheldon must teach a class, Howard decides to take it; Amy takes advantage of the tension between Penny and Bernadette.

Wolowitz feels nervous when he is asked to throw the first pitch at a Los Angeles Angels game; Penny and Leonard want to prove Sheldon wrong after he says he and Amy are the better couple.

Raj's honesty comes back to haunt him when his new girlfriend is unfriendly to Penny; the guys think about becoming part owners in Stuart's store.

During their weekend in Las Vegas, Bernadette and Amy accuse Penny of being a buzz kill; the guys try to invent the next big thing.

Raj and Sheldon try to simulate a dark-matter research expedition; after a fight about money, Penny and Leonard turn to Bernadette and Wolowitz for advice.

The guys try to help when Penny is faced with an awkward dilemma at work; Bernadette and Amy discuss sexuality and female scientists.

Sheldon feels pressured to participate in romantic traditions when the gang re-creates a high-school prom on the roof.

Leonard has minor surgery on his nose, causing Sheldon to overreact; Bernadette and Howard work on their marriage.

Though broke and lovelorn, a woman (Kristen Wiig) takes on the strange and expensive rituals associated with being her best friend's maid of honor.

Though broke and lovelorn, a woman (Kristen Wiig) takes on the strange and expensive rituals associated with being her best friend's maid of honor.

Phil has second thoughts after he helps Haley talk Claire into letting Dylan move in; Mitch accepts a job working for Jay's biggest rival; Cameron and Gloria cannot agree on how to handle Manny's girl problem.