TV Guide Nickelodeon Tuesday

When he is unable to solve a difficult physics problem, Sheldon decides to work with Penny in hopes it will help him clear his mind and find an answer.

Phoebe's world view is shattered when she learns how "Old Yeller" really ends; Monica becomes jealous when Richard begins going out with Joey and Chandler.

Chandler and Ross run into two bullies at the coffee shop; Monica is forced to get a job at a 50's theme restaurant after losing her cash in the stock market.

The gang plans a surprise party for Rachel, but even they show surprise when they discover that both of her estranged parents have shown up.

Phoebe catches chicken pox just as her old flame arrives in town on leave from the Navy; Joey gets a job at Chandler's office but decides to play it as a role.

Joey and Chandler adopt a baby chick and a duck; Ross misses a panel for the Discovery Channel to help Rachel, who may have a broken rib.

At the premiere of Joey's big play, Ross alone concludes that Rachel's date is insane; Joey falls in love with Kate, but she gets a big job in Los Angeles.

Cameron is desperately trying to find ways to keep his engagement hidden when his sister comes for a visit, but she has her own news that catches him off-guard.

Disaster looms after Jay pulls a few strings to reserve a table at the newest popular restaurant, only for every family to begin running a bit late.

Gloria hires a male nanny; Phil and Jay take Frank out for a night on the town; Mitch and Cam commission Pepper to plan their dream wedding.

Calvin is resistant towards Tina's idea to see a couples therapist, which she gets after learning that Dave and Gemma see one to keep their marriage alive.

An eco-conscious neighbor and his pet rooster cause commotion in the community that Dave and Calvin aim to correct; the youngest Butler son makes a confession.

Calvin and Dave's first road trip is marred by an unexpected test of friendship; Tina and Gemma work on home repairs while their husbands are gone.

Mr. Krab decides to host a talent show and invite everyone; SpongeBob is determined to prove that Plankton is only evil due to how he's treated by others.

Mayor Humdinger's tour bus goes out of control; Alex and the mini patrol go missing in the museum and Mayor Goodway gets stranded on a T-Rex.

When Daring Danny X performs a new stunt, a strong wind blows him upside-down; Mayor Humdinger sends Rocky Kitty to steal one of Mr. Porter's pies.

Big Hairy's little brother falls into a hole and Tracker gets carried away by Big Hairy; Danny tries extreme rock climbing with Ace Sorenson.

Aqua Pups rescue Coral, Moby and McSquidly from a submarine; Aqua Pups must save the Merpups' golden orb release when Moby lures a Giant Squid into Puplantis.

Peppa and family are on the search for a new home; Peppa and family renovate their home; Peppa and George decorate their new rooms.

The pups team up with their new pup-friend, Al to save Adventure Bay's big bridge from collapsing with their brand-new Big Trucks.

Captain Gordy and his Space Shuttle are blasting off from the Adventure Bay Airport with a satellite, but Mayor Humdinger sneaks on board.

Mayor Goodway thinks she can change the Ruff-Ruff pack's naughty ways by pretending to be a bad biker and becoming part of their gang.

Digi and Tal build a giant Robo-Ducky that runs amok through Adventure Bay; Mayor Goodway's precious Chickaletta and a baby penguin accidentally switch places.

The PAW Patrol must save the day from two overly helpful robots; in a dream, Mayor Humdinger finds a prism that makes rainbows & drains Adventure Bay of color.

The pups decide to build a museum for their dinosaur bones; the pups build ramps all over town when Omar the Mail Carrier breaks his foot.

Mr. Crocodile volunteers to help too many friends all at the same time; Daisy and Mr. Crocodile invite a new friend to live with them.

When Boomer challenges Roxi in a race to the top of a mountain, his reckless driving causes an avalanche of boulders; Boomer's monster truck stunt goes wrong.

Myrna the Mynah bird leads her new feathered friends astray; Adventure Bay is holding a kid only soapbox derby race, when a mysterious newcomer " shows up.

Bubble Bass doesn't pay his bill, so SpongeBob and Squidward go to collect the cash; Mr. Krabs makes Spongebob and Squidward cook a fancy meal for Mrs. Puff.

Mr. Krabs turns the Krusty Krab into a jailhouse after Plankton breaks the law; SpongeBob and Patrick turn the pineapple into an RV and go on a road trip.

SpongeBob and Patrick complete chores at Old Man Jenkins' farm; Gary sneaks out of the house so that he can meet up with Spot, who is his secret best friend.

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.

The Stars visit the zoo; GrandPat spoils ever movie.

When the Krusty Krab encounters a storm, Mr. Krabs makes his workers and customers return to their homes; Patrick is afraid to lose his final baby tooth.

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

Plankton needs help stealing the secret formula for Krabby Patties and hires an intern; Patrick goes into a destructive fit whenever he hears a bell.

When SpongeBob and Patrick end up getting lost on a family road trip to the Great Barrier Reef, they find themselves in an exciting adventure.

Rachel agrees to be maid of honor at her ex-fiancé's wedding; to get a role in Warren Beatty's new movie, Joey needs to practice kissing other guys.

Ross reveals a fantasy to Rachel involving a certain "Star Wars" character; Chandler wants Joey and Janice to bond, so they spend the day together.

Ross is in a hurry to get everyone dressed for an important banquet at the museum but no one is co-operating; Ross offers to drink a glass of fat.

Monica uses her free time after breaking up with Richard to make jam and considers insemination through a sperm bank; Phoebe dates a man who stalks her twin.

Phoebe pretends to be Joey's agent and has some success in getting him auditions; Ross is upset when Ben brings a Barbie doll on his weekend visit.

Phoebe has trouble bonding with her half-brother when the estranged relative is in town for a visit; Joey attempts to build an entertainment center.

Tensions start to run high when everyone is coincidentally staying at the same hotel for a science event; Bernadette runs into her ex-boyfriend.

Sheldon is forced to use his vacation time, so he goes to work with Amy in her neurobiology lab; Bernadette wants Howard to think about signing a pre-nup.

Leonard learns he can only bring one guest with him on a Valentine's Day trip to see the Hadron Collider, forcing him to choose between Sheldon and Penny.

When Sheldon gets a ticket and has to go to traffic court, he is devastated to learn he is going to miss out on getting a comic book writer's autograph.

When the guys happen upon an actual prop from "The Lord of the Rings" movie trilogy, the desire to possess the object threatens to tear apart their friendship.

Janice questions the group as to whether any of them have ever slept together in the past, leading the collective of companions to reflect upon a period of time

Monica buys a new bed from Janice's soon-to-be-ex-husband, "The Mattress King," but the wrong one is delivered; Rachel attempts to have Ross bond with her dad.

Chandler is about to buy Janice an expensive gift until he learns she still has feelings for her ex-husband; the gang pokes ugly naked guy to see if he's alive.

A drunken Chandler fools around with one of Joey's sisters, but can't remember which one; Ross is suspicious about Rachel's job offer from a good-looking guy.

Ross seeks advice from Phoebe's herbalist when he's afflicted with a mysterious skin condition on his butt; Monica worries that Pete may propose to her.

Monica must decide her future with Pete when he plans to enter the Ultimate Fighting Championship; Chandler has a problem when his new boss is slaphappy.

The family heads out to the annual fair; Phil surprises Claire on their 20th wedding anniversary; Gloria signs Jay up to be a fair cop; Haley meets Andy.

Claire convinces Jay to attend ClosetCon this year and he meets some old colleagues; Cam, Mitch and Lily visit the Tucker farm for the first time.

Coach Cameron is hyper-focused on winning an upcoming football game and is determined to show no mercy; Claire proves that she's more than the boss's daughter.

Gemma's sister, Brittany, comes back and claims to have moved past her troublemaking ways; Dave persuades Calvin to join him in completing an escape room.

Calvin and Tina are taken aback when Malcolm unexpectedly returns home with a new motorcycle; Dave and Gemma embark on an impromptu trip to Las Vegas.