Jimmy Neutron: Runaway Rocketboy!

The pilot of Jimmy Neutron: Boy Genius. The short was going to start the series, but Nickelodeon liked it so much that they decided to make the film and the series was produced a couple of years later. Jimmy runs away after his parents ground him for launching Carl off the roof. Little do his folks know that Jimmy has been abducted by aliens, who think he knows about earth's defense systems.