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 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.

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

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

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

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.

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

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.

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.

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

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 must rescue Brobot's parents from the terrifying Junk Man, a galactic space scoundrel who plans to dismantle the robots and sell their parts to the highest bidder.

Carl, Sheen, and Jimmy take jobs at a local burger joint. Jimmy transforms it to a fully automated restaurant that aims to please the customers and destroy the competition.

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

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.

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

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

Jimmy must help Asian Princess Peggy Tsu retrieve the Egg Drop Jade before her evil brother steals it.

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.