Jimmy Neutron: Boy Genius (2001) - 9 mistakes

Continuity: When Jimmy Neutron is giving birthday presents to his mum he pulls out a necklace and some earrings from a bag. His mum only takes the necklace from him but the earrings are no longer in his hand.

Continuity: Nick's necklace is a string looped through a ring, but sometimes the string makes only one pass through the ring and sometimes two.

Continuity: In the opening sequence, Jimmy uses a long string from Carl's shirt to help launch the satellite. Jimmy then launches Carl from the rocket. That same morning, Jimmy finds Carl hanging from a tree, and his shirt is intact.

Other: During the entire time the kids are in outer space, they have no air to breathe.

Continuity: In the classroom after Cindy is done explaining her dinosaur report she heads back to her desk, Jimmy and Cindy get in an argument when it cuts to Jimmy, in the background you see Carl standing up and not sitting.

Audio problem: When Nick tells Jimmy, Carl, and Sheen about sneaking out to Retroland, he skates off into the ally and says "Anyone who matters is gonna be there", his lips aren't in sync with the sound.

Continuity: In the scene where Jimmy's parents are kidnapped, their bedroom is next to the kitchen, however, in other parts in the movie, the parents' bedroom is upstairs.

Factual error: When Cindy is giving her "fossil-to-chromosome ratio" report, she calls her model dinosaur skeleton a plesiosaur. However, the skeleton is of a bipedal dinosaur (likely a hadrosaur, judging by the "duckbill"), while plesiosaurs were aquatic reptiles with flippers instead of feet.

Continuity: When Jimmy goes to check his experiments, there is a fish tank type thing and he then checks the invisible hamsters and the girl eating plant, but when he gets to the burping soda the fish tank thing is gone.