Revealing: In the major helicopter scene when Ride of the Valkyries is played, the actual tape isn't going over the playing heads.

Revealing: When De Niro gets shot in the neck, his bald skin cap wrinkles considerably when he presses the wound with his hand. Confirmed by make-up artist Dick Smith in the making-of documentary.

Continuity: After Lester throws the pillow, it bounces off the couch and lands in the chair. In the next shot it's gone, but reappears in the following shot.

Continuity: After Leon rescues Mathilda from the SWAT team and dodges the snipers, he shoots out a ventilation fan to make an escape route. The blast pattern in this sequence is all wrong. First off, the camera starts on Leon as he begins shooting. He gets off two shots before the camera switches to the vent, but when it does we see about 7 bullet holes around the vent. Then the camera goes back to Leon as he continues firing shots. When the camera is on the vent again, some of the holes that had been there previously are gone. Most notably a hole directly above the vent and to the right is no longer there, and the damage below the grate is significantly less than it had been.

Continuity: When Danny gets shot at the end of the film, his paper flies out of his hand. But the very next shot of him shows that the paper is still in his hand being held over his head while he falls backwards. In one of the following shots the paper is back on the floor, but it's on the opposite side it should have been when it flew out of his hand. It's all shown in slow motion and it's very obvious.