Since Jimmy's a scientist, he has more important things to do than pick up his pants - like invent a device that'll do that chore for him. But when the nanochip develops advanced brainial capacity, Jimmy's pants lead an attack on the city of Retroville!

Jimmy is tired of being a genius, so he decides to drain his brain to normal capacity. But when a big meteor heads straight for Retroville, who will save the day?

Miss Fowl's class has a candy-selling contest, with the grand prize being a trip to Retroland! To beat Cindy in the contest, Jimmy invents a robot programmed to sell candy no matter what.

In his lab, Jimmy constructs the perfect little brother he never had, "Brobot".

To settle an argument with Cindy, Jimmy brings Thomas Edison to school.

Jimmy's Granny comes to visit and he gives her his new youth tonic potion.

Jimmy goes 15 years into the past to a time when his parents were swinging sweethearts.

Jimmy invents the Dream Injector 5000 and enters Carl's dream to figure out what he is afraid of.

Jimmy's attempt to cool off the summer heat wave results in a new Ice Age.

Jimmy, Carl and Sheen form a band in order to beat out Cindy and Libby for the talent contest first prize.

To get revenge on Cindy for winning a race, Jimmy adapts his running shoes so he can move at lightning speed.

Jimmy tries to disprove Nick's scary tale about the Phantom of Retroland.

In order to get his new chemistry set right away, Jimmy hypnotizes his parents.

Jimmy comes up with a snack that is even tastier than everyone's favorite.

Sheen's oldest and most prized UltraLord is missing! It's up to Jimmy, playing a high-tech Sherlock Holmes, to find it.

Jimmy creates a "get out of school sick" patch.

Sheen and Carl convince Jimmy to throw a party when his parents go out to watch Ducks. But when Hugh and Judy come home early, how can Jimmy convince his guests to leave?

Jimmy uses his Neutronic Game Cube to send Sheen into his favorite Ultra Lord video game.

At the parent-child picnic, Jimmy gives his dad a bionic sweatband to help their team beat Cindy's.

The Father's Day talent show is a few days away so Jimmy invents a device that turns dorky Hugh into the coolest dad in Retroville.

Jimmy, Carl, Sheen, Cindy, Libby, and Goddard blast off into space in Jimmy's newly invented spaceship to mine for aster-rubies while fighting off space bandits and their own greed.

Jimmy invents the Quantum Replay 9000 which enables him to go back in time. Hugh accidentally sends Jimmy, Carl, and Sheen back 200 million years.

Bored by a class documentary on mummies, Jimmy decides to take Carl, Sheen, Libby, and Cindy along with him to see the real deal.

Jimmy's determination to captain a winning baseball team leads him to rev up the equipment with Neutronic technology.

They boys use a metabolic accelerator to make them old enough to buy a violent video game.

A laboratory mishap exposes Jimmy, Carl and Sheen to a powerful pheromone that causes each of them to fall madly in love with the next female they see.

While Judy Neutron takes a spa vacation, Jimmy invents The Maternotron 6000 to take care of the house.

Jimmy clones himself so he doesn't have to do chores.

During a class trip to a rodeo, Jimmy, Carl and Sheen fall for a cute little cowgirl named Sally.

Cindy Vortex leads a campaign to ban Jimmy from the school's science fair.

Timmy Turner is magically sent to the secret lab of none other than Jimmy Neutron, the boy with the genius IQ. How will Timmy and Jimmy get back to each other's own worlds?

Jimmy designs a temporary remedy at the Wheezers' house so he and Carl can have fun.

Jimmy and company are invited to the home of a spoiled boy billionaire - who wants Jimmy's dog.

Jimmy returns from an excavation on the Twonkus-3 comet with a small furry creature burrowed in his soil samples that have a rather violent reaction to music.

Famous film director Quintin Smithee is coming to Retroville to make his next big movie, and Jimmy, Cindy, Libby, Sheen and Carl all have starring roles.

Jimmy, Sheen, and Carl travel 15 years into the future, only to find that some things have gone wrong. Can they right the past to save their future?

A trip gone wrong ends up turning even worse when Jimmy and Cindy get into an argument that winds up getting them stranded together.

Jimmy Neutron and Timmy Turner vie against each other for Cindy's affections and Professor Calamitous employs Cosmo and Wanda in his evil plans.

When the entire population of Retroville is accidentally hit by Jimmy's shrink ray, the Space Bandits abduct everyone with the nefarious plan of marketing and selling them throughout the galaxy as living dolls.

A new TV show turns everyone in Retroville into mindless and exceedingly cheerful zombies.

To impress Betty Quinlan, Jimmy performs a magic show using a cheap magic kit that's full of his own technological upgrades.

The boys travel to the Bahama Quadrangle to disprove the myth of the disappearances associated with the mysterious site.

Carl's pen pal, Elke Elkberg from Sweden, is coming to Retroville to meet him, and Carl is in a panic.

Jimmy is framed for a break in at the Retroville Bank. When Carl and Sheen attempt to free him from his incarceration, the three boys end up on a chain gang together.

Jimmy places a funny chip into Hugh's new Flippy puppet when he insists on using it for Career Day at school. But Jimmy soon learns that Flippy is stealing his dad's mind and has to save him before Flippy disposes of him.

Jimmy and Timmy are at it again: bickering over the affections of Cindy, but somehow end up fighting off enemies together!

When Jimmy hides a time displacement device in the teachers' transportation to the annual education convention, the entire faculty of Lindberg Elementary is sent into temporary time limbo.

The kids become news anchors for a local television network.

Sheen's dad, Mr. Estevez desperately wants to impress his son, so he pretends he is a superhero.

Goddard is disqualified from the Retroville Pet Show because he is not technically a real dog.