Revealing mistake: When Tim Curry runs out of Kevin's hotel room after being scared by the inflatable clown doll he hits his knee on a table. When he hits the table and then hops away you can clearly see that he is wearing a knee-pad.
Revealing mistake: Near the very end of the movie, when Magua has taken Uncas' love interest (Madeleine Stowe's character's sister) and he is taking a path through the mountain, Daniel Day-Lewis runs up a path and brushes against what seems to be a rock. But, the grey coloured "rock" seems to be a prop and moves like a piece of cloth.
Revealing mistake: While Nick and his father are driving home with the giant baby behind (an obvious green screen projection), the baby breaks a tube from the car and throws it to the floor. Nick bends down to pick up a prop located offscreen, to add up for realism, but the problem is that he bends down before the baby throws it, so the whole trick is revealed.
Revealing mistake: At the beginning of the voyage, in the shot where the camera pans around the ships (just after the scene when the sail is being unfurled) we can see a jet airliner contrail mark on the sky.
Revealing mistake: When Shannon is playing the band music on the piano at the beginning, the movements of her hands don't match the notes heard.
Revealing mistake: When Gazeem is standing in front of the Cave of Wonders, he leaves no footprints in the sand.
Revealing mistake: When Daniel belly-lands his plane the rotors get totally bent. When the plane bounces back the rotors happily rotate again, revealing their rubbery consistency. (00:03:15)
Revealing mistake: In the ending when they are pulling into Miami you can see the exhaust from the engine even though it is supposed to be seized. (01:34:30)