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.

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

Jimmy and Cindy are forced to collaborate on a science project involving hidden treasure.

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.

Jimmy comes up with an invention that allows him to read Cindy's mind.

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

When the old tyrant of a hall monster leaves, Jimmy is picked as his replacement.

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

Miss Fowl swallows a seed from Jimmy's DNA-accelerated spinach plant turning her into a 50-foot plant.

Jimmy creates an electronic bodyguard to protect him from a bully.

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

Jimmy lands the spot of host on Lindbergh Elementary's Public Access show! When the show fails miserably, Cindy and Libby are brought in as producer and co-star, changing informative Science With Jimmy to flashy Funky Jam Dance Party (with some science).

The mad Professor Finbarr Calamitous schemes to make Jimmy his "scientific slave."

The Yolkians have come to earth, but this time they seek out only peace and brotherhood with the people of Retroville. While Jimmy Neutron suspects the worst, everyone in town is ready to forgive and forget.

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.

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.

In order to have the scariest Halloween costumes ever, Jimmy uses his latest invention to morph Carl and Sheen into a Vampire and a Werewolf.

Jimmy, Sheen, Carl and Captain Betty set out on a mission to capture the lake monster that has haunted Lake Retroville for at least six months.

Jimmy runs for class president against Sheen, Libby and Bolbi - the new kid.

Jimmy attempts to update the mischievous Nanobots in order to correct errors in his homework, but the Nanobots take it upon themselves to correct everything - even the human race!

Jimmy is convinced that Santa Claus does not exist. To prove his theory, he travels to the North Pole where he discovers a remote toy factory.

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.

Sheen is one math test away from being left back, so Jimmy turns his Brain Drain helmet into a Brain Gain helmet and uses it on his buddy, instantly quadrupling Sheen's IQ.

Jimmy is desperate to get the starring role opposite dream girl Betty Quinlan in the school musical, "Macbeth in Space." But the only part he can land is the FX master backstage.

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.

A strange meteor lands in Retroville, bearing a mysterious message in an alien language. When Jimmy is finally able to translate and answer the riddle, he, Cindy, Libby, Sheen, Carl, Bolbi, and Goddard are sucked into space - only to find that the message is an invitation to Intergalactic Showdown! Team Earth must learn to work together to win - or lose their home planet!

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.

After a run in with a radiation belt in outer space, Jimmy, Cindy, Carl, Sheen and Libby are all endowed with super powers.

Jimmy is recruited by the most prestigious science college in the country to be their new superstar student. But when he gets there, Jimmy becomes the unwitting target of rival student, Seymour Nimmelfarb.

King Goobot has organized the most diabolical collection of bad guys to ever assemble on one space station. Their mission: Get Jimmy Neutron.

In Retroville, Sheen is just an average hyperactive kid. But in Shangri Llama, he is known as The Chosen One, or One Who Puts Foot Behind Head.

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.

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.

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.