TV Guide Nickelodeon Thursday

The guys decide to participate in the school Physics Bowl for fun, but Sheldon's overly competitive attitude gets him kicked out of the group.

After purchasing a coveted time machine prop from a classic 1960 film, the guys are excited about its arrival, but the object causes problems for Penny.

When Sheldon's twin sister Missy visits, Leonard, Wolowitz and Koothrappali become infatuated with her, and Leonard comes up with plan to eliminate the others.

Monica and Chandler disagree over how to redecorate Rachel's old room; Phoebe refuses to believe that Ross does not still have feelings for Rachel.

Joey's SAG health insurance has lapsed due to his lack of work; after moving in with Ross, Rachel learns that Ross never got their marriage annulled.

Rachel convinces a delivery girl to give Ross her phone number to boost his confidence with women; Joey invites his grandmother to watch his TV appearance.

The entire family takes Haley out to a bar in commemoration of her 21st birthday; Claire attempts to get Haley to look at her like a friend instead of a mother.

After the Dunphys and Manny have a near death experience, each person resolves to change their lives, which throws the family into chaos.

Claire hates how the neighbors' yard looks with their hideous boat parked on it, so Phil makes a strike against them; Jay struggles to potty train Joe.

The Butlers and Johnsons try to fix a dilapidated property in their community in order to keep a group of greedy developers from purchasing it.

Dave and Calvin's mission to retrieve Gemma's stolen phone encounters an unexpected development; Malcolm and Marty move their belongings into their new home.

Calvin is pushed to make a physician's appointment after not going for nearly 10 years and is surprised when his doctor recommends that he get a colonoscopy.

Tina threatens Dave's amateur band when she takes over as lead singer; Marty decides to let his boss crash at his place and quickly regrets his decision.

SpongeBob decides to move back with his parents after a failed attempt to rebuild his home when it was destroyed; SpongeBob and Squidward create a pizza.

A sour Speed Meister sends a lemonade stand rolling through Builder Cove; Rubble & Crew build a bridge to help Crunchy the beaver get to the other side.

Charger has got too much energy to sleep; Rubble and the pups build Mix, Motor, Lucas and Lily a Super Squirrelly Whirly playdate.

The turkey from the Thanksgiving feast flies away with Mayor Humdinger and his kittens; a strong wind sweeps up all the surfers in the windsurfing race.

The PAW Patrol tries to help Farmer Al gather his loose pigs; Ryder and the team investigate a haunted cabin that Jake wants to turn into a ski chalet.

Dr. Hamster has brought a giant ant farm and opens the ant farm's lid to show how they got in; nobody noticed they had escaped and started moving things.

The pups use their new vehicle, the 18-wheel Paw Patroller, to help locate Jake after he winds up lost in the South Pole after losing his equipment and phone.

The Patrol finds themselves busy as an ice storm hits Adventure Bay; Mayor Goodway recruits the Patrol to face Mayor Humdinger's basketball team.

Skye's favorite stunt pilot is making an appearance, but engine trouble causes problems; the Patrol helps get Farmer Yumi's farm ready for her wedding.

Marshall, who is stationed at the Lookout by himself, must respond to an urgent call on his own; Zuma and Everest help a family of deer stranded in the snow.

When Carlos loses his parrot in the jungle, he recruits the PAW Patrol to help bring his bird home; Ryder and the pups must relocate a beehive.

The pups need to build a movie theater to watch a new movie playing in Builder Cove; Grandpa tells the pups about a secret buried treasure.

Rubble & Crew builds a better and safer roller coaster; the Bark Yard safety inspection is today, but Motor might go boom and it will cost a gold safety star.

Marshall performs some dinosaur dentistry with the help of an ancient geyser and his fellow pals; Francois and Cap'n Turbot are in Dino wilds for an adventure.

A walrus needs Skye and Marshall to rescue his friend; Cap'n Turbot and his cousin get stuck on a high ledge while looking for a dinosaur bone.

SpongeBob and Squidward try to sell Krabby Patties from a food truck in the darkest depths of the ocean; Pearl & Narlene have a whales' day out in the big city.

When the secret ingredient of the Krabby Patty is stolen, SpongeBob and Patrick decide to launch an investigation in order to find it.

SpongeBob and the gang visit Atlantis, but when Patrick tries to take a picture of the world's oldest bubble, it pops and the Atlantean forces come after them.

SpongeBob obtains a magician's wand and causes mayhem; on Friday the 13th, Mr. Krabs' extreme superstitions become a disruption for everyone around him.

The Stars celebrate Thanksgiving with Bunny's side of the family in Klopnod.

Mr. Krabs has SpongeBob and Squidward make the first successful Krabby Patty pizza delivery; Mr. Krabs tries to make even more money; Squidward takes a bite.

Rachel's self-absorbed sister, Amy, joins the friends for Thanksgiving dinner at Monica's; Joey forgets to show up for the Days of Our Lives cast float.

A pregnant girl from Ohio selects Monica to adopt her unborn child; Monica and Chandler lock out the gang when they arrive hours late for Thanksgiving dinner.

A runaway Underdog balloon ruins Monica's first Thanksgiving dinner; Joey wins his first modeling gig as a poster boy for Venereal Disease.

Ross enlists Chandler and Joey's help in making a decision between Julie and Rachel; Monica makes a synthetic chocolate substitute.

The gang plays a game of touch football on Thanksgiving; Joey and Chandler argue over who gets to date a model; sibling rivalry dominates Monica and Ross.

Chandler agrees to spend Thanksgiving in a shipping crate as penance for kissing Kathy; The gang decides to give each other Secret Santa gifts.

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

Monica's parents, who don't like Chandler, learn Chandler is living with Monica when they visit on Thanksgiving; Rachel makes a dessert with beef.

Sheldon has an epiphany when a song gets stuck in his head; Dave is invited over to Amy's for dinner; Wolowitz and Koothrappali obsess over a fan of their band.

In the aftermath of Sheldon's mother having an intimate evening with Leonard's father, the gang is left to deal with an uncomfortable morning the next day.

Penny tries to plan a surprise birthday party for a reluctant Leonard, but she gets sidetracked when Sheldon tries to live his fantasy in an electronics store.

After the revelation of an embarrassing secret ruins her first date with Leonard, Penny discovers an unwilling confidant in Sheldon.

After seeing Penny with a new man, Leonard turns to Leslie Winkle, but the decision angers Sheldon, who considers the woman his arch-nemesis.

Joey poses as a Porsche driver while trying to locate the car's actual owner; Ross and Rachel are forced to get a divorce when the annulment falls through.

Before moving, Chandler helps Joey financially by "losing" money to him in various games; Ross pretends to stay home with Ben to avoid helping Chandler move.

Ross, Chandler and Joey go on a ride along with Gary in order to distract Ross from Emily; Emily leaves a message for Ross that accidentally gets erased.

When Phil realizes that Luke is hitting his teenage phase of shutting him out, he gets Andy to be his new assistant; Gloria worries Joe is allergic to Stella.

As Valentine's Day approaches, Claire worries that Phil has more feelings for "Juliana" than for her; Gloria's sister visits, which halts Jay's romantic plans.

After spending a weekend with Phil's old pals, Claire grabs the last first class seat available on their flight home, leaving Phil stuck in coach.

Dave enlists Marty to discreetly supervise Calvin while he builds a treehouse for Grover; Tina and Gemma face off in a heated bake-off.

Calvin becomes jealous when Tina and Gemma have an unexpectedly odd situation arise in a revealing art class; Dave, Marty and Malcolm read a mystery novel.

Dave stops a robbery at the barbershop and is affected by the newfound attention; Marty asks Gemma to help test his new stress-relieving hobby.