The yuletide season brings headaches for Santa Claus, who bails his ne'er-do-well brother Fred out of trouble and puts him to work in his factory.

Claire and Phil threaten to take away Christmas when the kids get into trouble; Cameron and Mitchell take Lily to have her first picture taken with Santa.

The family puts together a quick Christmas celebration when they realize they won't be together on the actual day.

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.

Gloria rents a cabin in the mountains where the family can celebrate a picture-perfect Christmas, but unexpected factors complicate the holiday; Jay makes an announcement.

Manny and Luke's efforts to put on the school's winter dance get complicated due to a texting error; Gloria, Claire, Mitchell and Cam volunteer at the dance while Jay tries to get out of it by pretending he wants to spend time with Phil.

Hayley works to figure out the best time to give the family a Christmas gift they will never forget; Phil borrows the family Christmas tree for a house-showing; Jay, Gloria and Joe deal with unwelcome holiday visitors.

The friends renege on a promise not to bring dates to their New Year's Eve party.

Phoebe, hoping for a Christmas family reunion, travels to upstate New York in search of her biological father.

Rachel wonders if she'll ever get another job after she quits Central Perk; Joey's new job selling Christmas trees upsets Phoebe; Ross accidentally breaks a little girl's leg.

Ross struggles to maintain a long-distance relationship; Chandler's well-intended attempts to get Rachel a date seem to miss the mark; Monica's plan to assert some authority at her new restaurant goes awry.

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.

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

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.

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.

Monica fears the worst when she learns Chandler will be spending Christmas in Tulsa working on a deadline with a beautiful co-worker (Selma Blair).

A poor but hopeful boy seeks one of the five coveted golden tickets that will send him on a tour of Willy Wonka's mysterious chocolate factory.

Armed with nothing but a hatful of dreams, young chocolatier Willy Wonka manages to change the world, one delectable bite at a time.

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

A magazine article only credits Sheldon in an article about a paper he co-wrote with Leonard; a blackout at Mrs. Wolowitz's results in a final dinner in her honor.

Amy and Sheldon spend Thanksgiving at the aquarium -- as friends; Wolowitz volunteers at the soup kitchen with Raj, Emily and Bernadette; Penny realizes that Leonard knows her better than she thought.

Sheldon plans an authentic "Little House on the Prairie" dinner for Amy's birthday; Leonard receives a Christmas letter from his brother.

A man makes a deal with a mischievous elf who casts a magic spell that brings the 12 Days of Christmas to life.

The yuletide season brings headaches for Santa Claus, who bails his ne'er-do-well brother Fred out of trouble and puts him to work in his factory.

Facing mandatory retirement after 200 years, Santa Claus (Nigel Hawthorne) asks a television producer (Whoopi Goldberg) to replace him.

A man makes a deal with a mischievous elf who casts a magic spell that brings the 12 Days of Christmas to life.

Eddie transforms himself into Steve Urkel to compete in a game show, not knowing that Steve is competing in the same show.

Carl invites Harriette to join his poker game; Eddie convinces Steve to fill in for him at work and comes to regret it.

When Sheldon moves to Dallas to attend a school for gifted children, the family struggles to cope with his absence.

Sheldon is required to attend Sunday school, but when he returns he decides to learn all he can about a multitude of religions.

Sheldon asks for a computer and unknowingly sparks an argument between Mary and George Sr. over the family's finances; Mary and the twins move in with Meemaw.

Sheldon's fear of germs leads him to detention when flu season hits Medford and he goes to extremes to stay healthy.

When Mary takes a job as church secretary, she finds herself becoming Pastor Jeff's marriage counselor; Sheldon and Missy spend their first afternoon home alone.

Sheldon makes friends with an upperclassman who introduces him to a new field of science; Mary and George disagree on how to handle Sheldon's blossoming social life.

Ross dates Rachel again after unwittingly agreeing to take responsibility for their breakup; Phoebe reconciles with her mother; Monica is stung by a jellyfish.

Phoebe becomes convinced that the spirit of her dead mother is inside a cat; Chandler and Joey are robbed; Monica goes on a date with a guy from her high school.

Rachel's boss, Joanna, leaves Chandler in an awkward situation that will require Rachel's help; Monica's catering fiasco.

Joey intervenes when the superintendent, Mr. Treeger, moves to evict Rachel and Monica; Chandler tries to quit a health club.

Chandler falls for a woman who is already involved with Joey; Rachel and Ross play the jealousy game.

Ross starts dating a beautiful but messy co-worker from the museum; Monica and Phoebe cater a sad event.

Chandler faces a tough choice after his passionate kiss with Joey's girlfriend; Rachel has to learn about dining alone.

To atone for kissing Joey's girlfriend, Chandler agrees to stay inside a shipping crate during the Thanksgiving holiday.

Rachel's career is obstructed by her boss, Joanna; Monica faces a big decision; Chandler, Ross and Joey party.

Ross struggles to maintain a long-distance relationship; Chandler's well-intended attempts to get Rachel a date seem to miss the mark; Monica's plan to assert some authority at her new restaurant goes awry.

Phoebe's brother (Giovanni Ribisi) asks her to carry a baby for him and his wife; Chandler gets lessons in love; Joey finds himself in a class struggle.

Phoebe undergoes an embryo implant procedure to become a surrogate mother for her brother and his wife; Monica and Rachel wager their apartment in a trivia game against Chandler and Joey.

Chandler has a hard time handling Kathy's new role, in which she pretends to have sex with a handsome man; Rachel is attracted to a customer when she's demoted to personal shopper; Monica decides that Joey's new place is built for entertaining.

Sheldon teaches Leonard how to understand football; a kite-fighting incident threatens Howard and Raj's friendship.

Sheldon tries to make peace when Leonard and Penny get into an argument.

Penny is forced to rely on Sheldon when she is injured while Howard, Leonard and Raj are away.

After being humiliated on the radio, Sheldon vows to destroy Kripke; Wolowitz tries to not ruin his new relationship with Bernadette.

A preview of upcoming U.S. National Soccer team action.

From Chase Stadium in Fort Lauderdale, Fla.

Analysis and highlights from a U.S. national team soccer match.

Sheldon tries to help Penny understand Leonard's work; Wolowitz gets jealous when Leonard starts hanging out with his new girlfriend.

Leonard is horrified when his mother (Christine Baranski) visits.

Sheldon and Koothrappali attend a university mixer; Leonard discovers that Penny believes in psychics.

After their apartment is robbed, Leonard and Sheldon turn to their friends to create a state-of-the-art security system.

Sheldon tries to figure out the answer to a physics problem by working with Penny.

After her family accuses her of being a quitter, Francine becomes a bodybuilder; Klaus claims to have invented the high five.

Jeff starts hanging out with Stan's favorite celebrity chef while in search of an identity; Klaus and Roger start their own valet operation.

Roger has a medical emergency and Stan has to take over his personas; the series' 250th episode.

Steve gets competitive during the father-son events at Possum Lake; Roger learns how to ride a bike.

Steve and Roger restart their career as a twin brother acting duo; the family becomes addicted to a novelty gift shop.

Steve goes to boarding school, only to discover it's an all-girls school; Stan is annoyed by a parade of characters that come to take Steve's place at home.

Francine becomes obsessed with home security after a break-in rattles her; Steve tries on Hayley's laid-back approach to school work.

Hayley feels left behind after Jeff becomes a star dog racing coach; Steve takes advantage of an empty house.

Worried about their bickering, Stan and Francine go to extremes to save their marriage; Roger excels at jingle writing.

Steve tries to get into baseball to connect with Stan; Roger creates real-life drama for Francine after her favorite soap opera is canceled.

Eddie falls for an older woman; Steve jeopardizes Carl's homeowner's insurance.

Steve (Jaleel White) has what he thinks is the perfect solution to help his Aunt Oona (guest star Donna Summer) lose weight quickly.

Carl's brother, who is in trouble with the law, visits; Steve's invention may give Eddie the upper hand in a boxing match.

Steve's time machine sends him and Carl back to a pirate ship.

A disappointing loss at the science fair sends Sheldon's life in a new direction.

Sheldon is bullied by an unlikely character; Mary and George disagree on how to handle the situation.

Mary bans Sheldon from reading a mature comic book; Sheldon decides it's time to stop living under Mary's thumb.

When Sheldon is no longer academically challenged at Medford High, he audits a college class taught by Dr. John Sturgis.

A battle erupts in the neighbourhood between the Coopers and the Sparks when Sheldon is terrorised by the Sparks' new dog.

Sheldon keeps tabs on Meemaw's budding relationship with Dr. Sturgis; George Sr. and Mary attempt to bond with their other children.

A visit to a strip joint fails to cheer up Chandler; Rachel gets Ross to go to an opera; Charlton Heston finds Joey in a compromising position during a movie shoot.

Chandler runs into Janice, now divorced, and finds her more irritating than ever; Ross plays rugby to impress Emily; Monica tries to figure out what a mysterious electrical switch in her new apartment does.

Rachel throws Emily a phony going-away party so she can see Joshua outside of work; pregnant Phoebe craves meat.

Ross tells Emily (Helen Baxendale) how he feels about her; Chandler and Joey suddenly receive a free adult TV channel in their apartment; Phoebe gets some surprising news about her pregnancy.

Ross has concerns about Emily's interests; Rachel's plans for Joshua are upset by a late change of venue.

Ross tries to keep Emily from returning to London; Monica and Rachel attempt to win back their apartment.

Monica and Phoebe find life in wedding attire has its charm; Rachel asks Joshua for more spontaneity.

Rachel and Ross reminisce separately about when they dated each other; the friends get invitations to Ross's wedding, but not all of them are going.

After Joey almost loses Ross' wedding ring, Ross asks both Joey and Chandler to serve as his best man; the girls host a baby shower for Phoebe.

Rachel, Monica, Joey, Chandler and Ross go to London for the wedding where Joey meets Sarah Ferguson, the Duchess of York.

Rachel frantically tries to get to London to tell Ross that she loves him before he marries Emily; Ross' parents argue with Emily's parents, Steven and Andrea Waltham.

Ross is distraught over the wedding; Emily punches Ross and flees from the reception; Monica and Chandler try to control their passions.

Monica and Chandler are caught in a passionate embrace but try to prove it was innocent: Ross' wife won't speak to him; Phoebe feels neglected; Rachel appoints Monica as her advisor in romance.

Leonard must choose who to bring with him when he goes to see the Large Hadron Collider on Valentine's Day.

Sheldon ends up in traffic court after getting a ticket because of Penny.

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.

Sheldon goes to extremes to keep Leonard and Penny happy when they stop speaking to each other.

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.

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.

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.

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.

Mitch and Cam try to save an old tree in the park; Jay takes Manny to a kid's Olympics-themed birthday party; Gloria and Claire have an eventful shopping trip.

When Manny and Luke's Little League team makes it to the playoffs, Claire and Cameron search for a field to use; Gloria uses a microphone to sing to the baby.

Jay and the family plan to celebrate New Year's together at a hotel in Palm Springs, but the hotel doesn't meet their expectations; Alex and Haley are faced with challenges as they try to watch the kids back at home.

Gloria and Jay try to make Manny's 14th birthday extra special by planning a surprise party; Haley starts hanging out with a much older guy.

When Gloria's mother and sister visit, they bring traditions, baby names and family baggage; Phil helps the kids with their problems; Mitchell and Cameron try to correct Lily's bad habits.

When the lead in the school's production of "Phantom of the Opera" gets sick, Manny is willing to do anything to land the lead; Phil and Jay wind up in a golf-off with Mitch and Pepper; Gloria and Alex visit a psychic.

Claire and Phil's Valentine's Day romp ends with Claire in the hospital; Jay and Gloria's attempts at romance are interrupted by the kids; after hosting a wild party, Cam and Mitch are left with hangovers and a new housemate.

Things get awkward when Phil shows up at Claire's college reunion; Jay is fixated on winning a big bowling tournament; a wig malfunction during an elaborate photo shoot with Joe leads to unfortunate results.

Mitch and Cam's friend Sal announces she's getting married the next day and they are in the wedding; Gloria doesn't trust her new nanny; Claire bonds with Haley; Phil helps Luke with a girl.

Claire and Cam bring in a third party (Wendi McLendon-Covey) when they reach an impasse on a landscaping decision; Phil teaches basic fix-it skills to the kids; Mitch helps Lily with a bully.

While at the hospital, Claire and Phil see an older version of their family; Manny and Jay visit a private school; Mitch and Cam organize a day for Gloria and Lily.

Phil gets desperate when Cam and Claire's flipped house is more difficult to sell than expected; Javier brings his new girlfriend along to visit Manny.

Phil is excited to discuss his job with Luke, Manny and their classmates on career day, but things get ugly when Phil's nemesis shows up; Cam and Mitch make a mistake while executing tooth fairy duties.

Mitch's ex-boyfriend, a personable and successful doctor, invites the whole family to a fundraising event at a roller rink; Phil teaches Gloria how to skate; Haley helps Alex talk to boys.

Meemaw is pursued by gentlemen callers; she is forced to set ground rules when Sheldon interferes.

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.