Factual error: When hero boy and girl and Billy are on the runaway car at the north pole, they crash into the stopper at the end of the tracks. They are flung backwards when in reality, due to inertia, they should have been flung forward into the guard rail.
Factual error: In the scene where the fireflies light the fireworks there is one problem: The chemical that creates light wouldn't ignite the wick on a firework.
Factual error: When the plane is attacked by missiles, Helen punches a button on the cockpit console and a screen lights up that says "chaff". The next shot shows the rear of the plane with several burning items coming from it that are supposed to be chaff. However, chaff containers burst open into thousands of radar-reflective strips that are meant to confuse radar-guided missiles (see real chaff in the movie Air Force One). What actually comes out are flares that burn extremely hot to confuse heat-seeking missiles. While it might be suggested that we just never see the containers burst open, later in the missile chase we see the exact same items in view for a much longer time and they never burst open.
Factual error: This may have been considered before drawing it this way, but it's a mistake nonetheless: When Tinkerbell shows up at the end with all the other Disney characters to watch the movie, she is back lit and silhouetted just like everyone else, and so is the pixie dust she is trailing. This is done simply to resemble a dark theater full of patrons, not to play some sort of impromptu guessing game. Her pixie dust has always been luminescent so it should not appear as a shadow against the theater screen. It'd be impossible to be silhouetted to that degree if it gives off its own light.
Factual error: The Great Exhibition was held in 1851, roughly 15 years before the film takes place.
Factual error: Sharks don't float when they're dead, they sink. While it did initially sink after being thrown out of the "casket", when the shot changes to Don Lino and Lenny consoling one another, you see him float back up. (00:33:50)
Factual error: When Team America (minus Gary) go and fight the Koreans in their planes, there is a shot where rain is dripping down the front of the cockpit. If they were flying, the water should be streaming backwards off the plane because of the wind, not dribbling down.
Factual error: King Neptune's crown changes size when Plankton steals it and when SpongeBob and Patrick retrieve it.