Set in the peaceful town of Retroville, Jimmy Neutron (voiced by Debi Derryberry) is the smartest kid in his school, a rambunctious tyke always working on his latest amazing invention and running around with friends Carl (Rob Paulsen) and Sheen (Jeff Garcia). When Jimmy returns home late one school night after sneaking out to go to the grand opening of the town amusement park Retroland, he finds a note on the refrigerator from his loving parents (Megan Cavanagh, Mark DeCarlo) saying that they have gone to Florida. When it becomes apparent that all of the adults in the town are mysteriously missing, Jimmy and his schoolmates--including the snooty Cindy (Carolyn Lawrence) and prepubescent stud Nick (Candi Milo)--join together to save their parents, who have been kidnapped by intergalactic aliens.

Running at a zippy pace and stacked to the nines with '80s cover pop songs (from the likes of Britney Spears and Aaron Carter), "Jimmy Neutron: Boy Genius" is a joyful family film that goes down with relative ease. The writing (by director John A. Davis and co-screenwriters David N. Weiss, J. David Stem, and Steve Oedekerk) is surprisingly clever, such as Jimmy's reasoning for why he thinks his mom didn't write the note on the fridge: "The serifs and kerning are all wrong."

There are also a number of creative ideas on hand, from Jimmy's robotic dog pooping out nothing but nuts and bolts, to the alien spacecraft being in the shape of chickens (whom they worship and plan to sacrifice the parents to). The most showstopping moments, however, comes when the kids create spaceships out of the rides at the local theme park. The sight of an octopus ride, a rollercoaster, and a ferris wheel flying gracefully through space is not only beautiful to behold, but downright incendiary.

"Jimmy Neutron: Boy Genius" slows down as it starts its homestretch, running out of steam before its already-slim 77 minutes are over. It also can't hold a candle to the superior, more original animated pictures of late. Still, the film is good-natured and has more than a few choice moments to warrant a recommendation for both children and grown-ups alike. If a sequel were made (as I predict there will be), it wouldn't be such a horrid idea. After all, there is more promise held in five minutes of "Jimmy Neutron" than in the whole of "The Rugrats Movie."