TV Guide Nickelodeon Sunday

When a new and exciting job opportunity overseas is offered to Leonard, it causes Sheldon to become jealous of his success and throws Penny for a big loop.

Sheldon and Penny spend quality time with one another and share intimate secrets; Wolowitz tries to help Raj get over his ex-girlfriend.

Leonard's friendship with Sheldon is thrown into question after returning from his trip to the North Sea; Wolowitz's mother threatens his masculinity.

Haley prepares to use tips in her parenting books; Manny hopes that directing Jay's dog bed commercial will lead him to get his ex-girlfriend back.

Claire must get everyone to leave the house before they embarrass her in front of a reporter from an important women's business magazine.

When Phil, Claire, Alex and Luke realize that the twins may be able help them with a few things, they offer to give Haley a break for a day.

Mitch and Cam discover their own lack of self-confidence as they help Lily overcome her insecurities about wearing a bathing suit to a pool party.

Gloria uses her alone time with the twins as a chance to secretly baptize them; Claire faces the fallout from the smart closet failure.

The Dunphy house becomes full when Dylan's hippie mother moves in and Jerry, who is Claire's lonely stepfather, wants to visit them.

Calvin and Dave try to retrieve Grover's stolen Christmas present; Tina talks about Malcolm and Marty's childhood Christmas traditions to the children.

Dave's patience wears thin as Gemma's freeloading sister unexpectedly arrives; Calvin grows weary of Malcolm continuing to live at home.

When a new secret formula for Krabby Patties is revealed, it proves disastrous for Bikini Bottom; Mr. Krabs and Plankton have to attend boating school classes.

SpongeBob SquarePants falls asleep on the bus and ends up in a strange town full of Bikini Bottom doppelgangers; Squidward loses his memory.

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Mr. Krabs produces Krabby Patties on an industrial scale, but it causes problems between SpongeBob and Patrick.

The Krusty Krab crew goes to a big concert to sell Krabby Patties in the stands; SpongeBob explores the melodious dreamscapes of his sleeping neighbors.

Squidward spends a day at the laundromat with his fellow Bikini Bottomites; SpongeBob and Patrick must track down Old Man Jenkins' prized worm hog.

Max gets some guidance from a farm dog as he tries to protect a toddler, who is the newest member of his family, and Snowball goes on a dangerous mission.

Members of a spooky and mysterious family begin preparing for a visit from their even creepier relatives, but trouble starts to brew with a TV personality.

After capturing one of Santa's elves, Lincoln discovers he's on the Naughty List, as he tries to get on the Nice List, Lincoln accidentally breaks Christmas.

SpongeBob and his friends and neighbors in Bikini Bottom celebrate the lovable features of the holiday season, including wintry weather, Santa Claus and gifts.

Nobody in Bikini Bottom has heard of Christmas or Santa Claus; SpongeBob wants to bring Christmas to Bikini Bottom this year and his enthusiasm is infectious.

SpongeBob and Patrick search for Squidward after the inside of his home turns into a vast garbage jungle; Plankton disguises himself as a collectible figurine.

Pearl becomes a star player after joining her high school football team.

Chandler accidentally kisses Monica in front of Phoebe and Rachel and then must kiss them to cover it up; Rachel finally tells Ross her feelings for him.

Phoebe gives birth to triplets and asks her half-brother if she can keep one of the babies; Joey's "sympathy pains" turn out to be kidney stones.

Joey thinks he's hosting a telethon for PBS, but turns out to be a pledge-taker; Phoebe, trying to perform a selfless deed, unknowingly donates money to PBS.

Monica and Rachel think that Bigfoot has moved into their building; Emily and Ross end their marriage after Ross refuses to end his friendship with Rachel.

Ross tells Rachel that he can't see her anymore if he wants to get Emily back; Joey finds out about Chandler and Monica and they swear him to secrecy.

Ross moves in with Chandler and Joey after he gets kicked out of his apartment; Phoebe dates a health inspector who frequently flexes his power.

While reminiscing about past bad Thanksgivings, Chandler learns his toe wasn't "accidentally" severed by Monica; Chandler slips and tells Monica he loves her.

When his co-workers continue to steal his prized sandwiches, Ross is forced to go "mental" and gets suspended and sent to anger management classes.

After the entire gang competes in a scavenger hunt designed by Raj, it winds up revealing the best and worst aspects of everyone involved.

Sheldon seeks revenge after Amy ruins one of his favorite movies; Leonard discovers a way to get Penny to do anything; Stuart creates an online dating profile.

Sheldon begins to feel cramped after Amy takes a job at the university with him; Howard ends up sleeping on Raj's couch after a fight with Bernadette.

Sheldon feels that major scientific breakthrough makes him a fraud; Howard's romantic gesture to Bernadette leads Penny to try harder with Leonard.

Sheldon's favorite childhood hero contacts Leonard with an offer to help with an experiment, leading Sheldon to befriend rival TV science host Bill Nye.

Cameron wants everyone to be happy for their annual Christmas dinner while he secretly prepares for an interview for an out-of-state job as a head coach.

The family prepares to utilize Alex's new company that's at a luxury apartment with notable residents; Phil reviews the restaurant's sliders for his food blog.

Phil checks on his father after he hears some troubling news about him; Jay gives Claire and Mitch memorabilia from their childhood.

Mitchell gets a life lesson when a former resident of the house appears unexpectedly; Manny's father appears with a big opportunity for his son.

In one final family trip, the group sets out to Paris so Jay can receive a lifetime achievement award for his contributions in the closet industry.

When Phil and Claire take Haley and Dylan to dinner to reassure them that they are not bad parents, they come across Mitch and Cam.

Calvin worries Tina spends an inordinate amount of time with a charming minister; Marty is stunned when he encounters his chaotic new upstairs neighbor.

Dave offers to help determine why Calvin's employees are quitting are en masse; Marty schemes to get a date with his new neighbor.