Continuity mistake: During the bear in the cabin scene, after Chet puts the door back up, shortly after, you'll see the door is on the floor while Roman is fighting the bear with the oar from the steps. (Also, note in that same shot, you'll see the bookshelf was destroyed to pieces with its books all over the floor. That scene was never shown and must have been cut from the movie).
Continuity mistake: Rachel throws a couple of suitcases and Jamie throws 2 more and a sleeping bag down the stairs. Next shot shows a chair and boxes that were never thrown. (01:08:10)
Continuity mistake: When Akeem and Semmi get their apartment, the landlord says that the room has only one window facing a brick wall. But when Akeem is out on the fire escape, he yells out to a street, not a wall. And there are two windows.
Continuity mistake: When Jessica appears on stage, Eddie has Betty Boop standing next to him in all close-up shots, except for a wide shot of the public behind Jessica where Boop is missing. (00:18:15 - 00:19:05)
Continuity mistake: After he climbs out of the air duct, John McClane's shirt goes from white to green. The dirt and grime from the air duct would cause discolouration only where the shirt comes in contact with the duct. However, his shirt is uniformly green including places that wouldn't make contact and it is impossible for all surfaces to make contact even in small areas. (00:23:05 - 00:56:30)
Continuity mistake: After Ken reverses the steamroller after running Otto over with it, you can see a red patch signifying his splattered body in front of the roller. However, a few scenes later, Otto is seen alive. (Otto was originally meant to die, until test audience feedback influenced a change of mind on the part of the filmmakers.)
Continuity mistake: As Tom Cruise and Elisabeth Shue are walking on the beach on their first date, they walk towards the camera, and you see the shadow of the camera crew very clearly.
Continuity mistake: While this movie is so bad and full of mistakes, its barely worth finding them all, one stands out in the history of movie mistakes. One of the officers on board the ship, Lt. Lamont, is killed by the villain. A few scenes later she shows up on the bridge as an extra.
Continuity mistake: There is a scene where Arnie and Danny DeVito are in the washroom of a nightclub. In one shot there is a beer bottle on top of a paper towel dispenser, and in the next shot it's on the other paper towel dispenser. (01:11:15)
Continuity mistake: During the chase scene, Steven Seagal has his tyre shot as he's fleeing from the bad guys. In the next shot, the tires are totally gone from the rims, then they're back again, then they're gone again.
Continuity mistake: During the horse and buggy ride to the church through downtown New York, when one of the girls is holding the reins by herself, you can tell there is a person under a red blanket at her feet (I guess to protect her while filming in case something goes wrong,) and only a moment later, the same blanket is black.
Continuity mistake: Throughout the film Elvira wears her trademark black dress, split to the top of her thigh, and underneath it she always wears black pantyhose. Inexplicably, this changes to black stockings and suspenders when she is undressing for bed on her first night in her new house. (00:31:35)
Continuity mistake: During the "Why Should I Worry" song, Dodger goes with his "scarf" of sausages through a basin full of wet cement. Logically the cement should be stuck on the sausages, though that does not appear to happen, even though the sausages went through the cement. There is cement on his paws, though, that he needs to wash off.
Continuity mistake: In a bus scene Crash is shown holding a guitar talking about being in the majors. In one scene he's just holding the guitar, the next he has a pair of sunglasses in his hand while holding the guitar. The next scene the sunglasses are gone. A couple of shots later the guitar is sitting in the seat next to him. When Laloosh challenges Crash to a fight, he's holding the guitar again.
Continuity mistake: When Jack and the Duke are in the restaurant car of the first train, Jack is eating a chicken leg in one shot. In the middle of a sentence he changes to eating jelly and ice cream, which he finishes. In the very next shot his bowl is full of jelly and ice cream again.
Continuity mistake: There is a scene where the kids are being chased in a speedboat, while mortars are being launched at them from behind. One shot is of the young boy looking at an incoming mortar over his right shoulder, yelling "Look Out!", and then seeing the mortar hit on the left side of the boat.
Continuity mistake: In the scene in the restaurant where Tom Cruise and Dustin Hoffman are trying to order breakfast, Hoffman's character fixes the salt and pepper shaker a certain way. In the next shot they are opposite the way he fixed them. Then in the next shot they are back to the way he had fixed them. (00:37:15)
Continuity mistake: Opening scene where Chris Sarandon is chasing Brad Dourif into the toy store. During the gunfight, Sarandon has gloves on. As he enters the store he is wearing gloves. The next shot, the gloves are off. The next scene, the gloves are back on and he takes them off by biting the fingertips and pulling them off. (00:01:50)
Continuity mistake: When mom finds the failed test in Les's pocket, it is folded into eighths. Later, when dad shows the failed test to Les, it has only been folded into thirds.
Continuity mistake: In the final final fight scene, Jean Claude's hair is dry and combed, then wet and sweaty, then back to dry so on and so forth.