Revealing: In the scene where Rocky and Bullwinkle are walking through the university with Kenan and Kel (right before they come across the anti-moose protest), Kel's right arm passes through Rocky's left several times.

Continuity: In the scene when the FBI agent is in the TV tower early on in the film, you see her put the FBI Identification card thing back into her 'mobile phone holder' in her bag. Then you see the guards charging up the stairs. Then the shot goes back to the FBI agent. She hasn't put her ID card thing inside her bag yet, she is still holding it.

Audio problem: At the end when Boris and Natasha are drinking from glasses, they throw their glasses up in victory and we hear the glasses shattering. But in the long shot, there's no sign of broken glass anywhere.

Factual error: When Boris and Natasha (Jason Alexander and Renee Russo) are at the airport (just missing Rocky, Bullwinkle and the FBI agent) Natasha says something about "Moose and Squirrel don't even know our names", yet earlier in the courthouse scene, Bullwinkle says something about Boris and Natasha being real people and Rocky and Bullwinkle still being cartoons.