Continuity mistake: When McClane is driving the police down the ramp to the tunnel so he can elude the helicopter, the car's windshield doesn't have any bullet holes or cracks in it, even though it did just a few seconds earlier. (00:37:55)
Continuity mistake: When Vernita and The Bride are talking in the kitchen and Vernita shoots The Bride from the cereal box, you can see the bullet hole in the back wall of the kitchen, but then a little later that part of the wall doesn't have any bullet holes. Also, not only is the bullet hole not where you see it hit in the first place, it's on the other side of the bride's head, along with the splatter from the cereal box.
Continuity mistake: After Gromit runs away he starts looking at signs. In one shot, a blue sign goes over the one Gromit is reading (Room to Let), but in the next shot it's not. (00:12:20)
Revealing mistake: During the honeymoon sequence at the end of the film, if you look at the right top of the flowers in the vase during the "flowers covering nipples" bit, you can see a bit of red duct tape covering Liz Hurley's nipple from behind the flowers. (01:22:20)
Continuity mistake: Towards the end, when Bruce Willis notices the writing on the aspirin bottle, he leaves it in the phone booth and the camera jumps towards it a couple of times. In the first shot the writing's almost vertical, but in the following shots it's at a definite angle. (01:48:35)
Continuity mistake: When Memphis is driving Eleanor he backs up and hits the right rear-view mirror. He stops, leans out the window and sees that it is dangling. The very next shot it is back to normal and it stays that way for most of the rest of the movie. (01:34:34)
Revealing mistake: In the opening scene, the helmet closes on the guy's head. Inside there are spikes on all sides, but when his head falls to the ground the blood only comes out the bottom. The spikes should have also gone into the other side of his head and blood should have run down his face to the floor. (00:04:20)
Revealing mistake: When David pushes the pallets onto the car, it's obvious that there is no-one inside. Similarly, when he uses the forklift to pick up the car a few shots later, we see inside the car and there is only a badly constructed dummy-type object in the back seat, and no real people. Even if they had bent down, they should still be visible. (00:09:00)
Revealing mistake: Right after one of the Mountie's cars is split in half by the snowplow, you can see the mini-wheel used to keep the half-car propped up.
Continuity mistake: In the scene where the Monte Carlo is battling with the Camaro, they go off road into a field. During a certain shot, the Camaro has to jump a hill and it goes airborne. While it's airborne, you can see the entire front end is destroyed. However, after it lands, you can see the front end of the Camaro is in excellent condition and it remains intact for the remainder of the film. I would guess that they used at least two Camaros for the film. (00:26:10)
Continuity mistake: Frank and Tony are talking with Flo and Tony is holding a bong. Through most of the scene, the bong is in Tony's right hand. But in several shots, it switches to his left hand. In one part in fact showing a side angle, Tony has the bong in his left hand and holding it on his leg. It then cuts to a close up and Tony points to Frank with the same but now empty hand. (00:05:40)
Visible crew/equipment: In the drive-in shootout scene, the camera and crew are visible in the rear view mirror in the cab of the white Dodge pickup fleeing De Niro and Kilmer.
Continuity mistake: Starsky and Hutch are both called in to the boss' office after robbing a bookie and destroying a Cadillac's roof. When Hutch walks into the office, the top drawer on the right side on the boss is closed. But when the shot changes to the boss when he starts talking to Hutch, the drawer is open. (00:05:20)
Continuity mistake: While singing in a duet with Miss Piggy, Céline Dion is wearing a dress with a strap over her right shoulder. Near the end of the song, the strap is suddenly on her left shoulder.