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

Jimmy is hosting a sleepover with Carl and Sheen! To make it the best slumber party in history, Jimmy invents a machine to make perfect pillows for pillow fights, create made-to-order pizzas, and tell scream-your-head-off scary stories. But what happens if the invention is overloaded and the programs mix up?

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.

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!

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.

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.

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

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

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

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

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

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

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

Hugh takes Jimmy, Sheen, and Carl on a camping trip into the wilderness, allowing no technology whatsoever. So what will save them when a big problem comes along?

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

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.

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.

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

The kids become news anchors for a local television network.

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

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.

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 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?

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

Eustace Strych is back, and he's still determined to humiliatingly defeat Jimmy. Now the race to find an energy source on Mars is on! Who will win?

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

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

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

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

On a trip to Planet Schmengy, a strange alien substance attaches itself to Carl's face.

The evil Jimmy clone is back, and he's reconfigured the cloning device to make an evil clone of the Earth with an alarming side effect – the real Earth is starting to disappear.

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

Jimmy's teleporting goof-up leads to him switching heads with Carl's pet hamster.

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

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

Jimmy and Carl get caught in the middle of a feud between their dads.

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

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

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.

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

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

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 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.

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.

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

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