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.

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

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.

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

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

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.

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.

The kids become news anchors for a local television network.

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

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.

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 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.

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

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's dad loses his job at the now-defunct automotive plant which means that the Neutrons may have to move to a new town. As a last-ditch effort to keep the family in Retroville, Hugh applies for a job as a toy inventor.

The Neutron family has gathered to celebrate Great Aunt Amanda's birthday. When Jimmy's present explodes, everyone suspects him of fowl.

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

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.

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.