Continuity mistake: Before Edward is looking at the family pictures you can see some scars on his face are open, when the camera focuses back on him the scars are closed.
Continuity mistake: When Buster and his wife Virginia, first get in their 4x4 truck to head down the road, they discover that broken tree limb. Before he yells "stop!", the only part of the road not covered in snow is the tire tracks. After he walks back up the hill (and Annie drives by), the road has no snow on it.
Continuity mistake: When Kevin Costner gets hit on the head by the top frame of the door, he is knocked out unconscious. Yet, when he gets back up after regaining consciousness, the blood from is head had been running down his nose. Don't you think that as he was lying down in a horizontal position, the blood would run down over the eyes towards the ears?
Continuity mistake: When the delegates assemble in the Great Hall, it is first shown that Canada is sitting to the left of Morocco. But shortly afterwards, Morocco is suddenly sitting to the left of Iceland, and Canada has mysteriously vanished.
Continuity mistake: When Rhonda climbs out of the ditch with Earl, where the graboid has killed itself, her backpack is slung over her right shoulder and hanging in front of her. In the next shot when she's standing up, the backpack is on her back.
Continuity mistake: When Michael enters the room where he sees Kay looking nostalgically at the old photos, he is carrying and offers to her pieces of cake from a cake that hasn't even been cut yet. They are the exact size and dimension of the cake slices that will betaken from the celebration cake which is not cut until several scenes later.
Continuity mistake: When the General jumps out of the flames, one of his legs breaks off after he hits the ground. All eight legs are intact after he is blasted by the nail gun and crashes into his nest.
Continuity mistake: The telephone on Scrooge's desk briefly disappears after his maid delivers an invitation to the archaeological society ball. (00:19:05)
Continuity mistake: Near the end of the film, when the SEALs are in the inflatable boats heading towards the coast of Beirut, there is a shot from behind showing all the SEALs wearing black diving suits. But when the shot changes to a close up of their faces, you can see they are wearing camouflage fatigues, not diving suits.
Continuity mistake: When Richard Gere is driving through the city in his Corvette convertible, he starts with the top down, then you see the car with the hard top bolted on, then again without.
Continuity mistake: When the teachers play the confiscated tapes of Harry, it's Christian Slater's voice, not the disguised voice you hear on the students' radios.
Continuity mistake: When they are in the library after they found out Stan committed suicide, it shows Beverly stand up but when it cuts back to her she is sitting down and stands up.
Continuity mistake: As Harrigan is walking away from King Willie in the alley, Willie turns toward him to say, "Prepare yourself." His face is well-lit. In the next shot, Willie is facing away in the background and his head is entirely in shadow. He's turned and lit again for his next line. (00:47:00)
Continuity mistake: A few minutes before Quaid kills his "wife", there's a shot of her with bright pink lipstick. Immediately before he shoots her, her lipstick is burgundy. (01:03:10)
Continuity mistake: When Mel Gibson and Robert Downey Jr. are hanging upside down in the copter, the first scene (with the necklace mistake) has Mel in the right seat and Robert in the left seat. When they crash out of the window Mel falls out first from the left seat and then Robert from the right seat.
Continuity mistake: When the mother is putting icing on a cake she destroyed during baking, in the next shot she is shown walking over to Steve Guttenberg's animation table and the icing is gone from the cake.
Continuity mistake: 35 minutes into the film, Cher enters her bedroom with a bowl in her right hand and a bottle in the left. When she gets into bed, both have switched hands.
Continuity mistake: At the end, when Jack shoots the main bad guy, he had already double-tapped somebody, but then shoots at least 5 more shots from a 6-shot revolver.
Continuity mistake: At the end of the movie, Jack parks the car in front of a palm tree and walks onto the beach. The shot changes while he stands there for a few minutes. As the shot changes back to show him walking off the beach, the car is no longer in front of the tree, nor does he drive by during the credits. I hope he enjoys his walk back to Miami.
Continuity mistake: In "Lover's Vow" Wyatt leaves the bar after firing Preston, leaving his drink and newspaper on the end of the bar. In the next shot the paper has changed position and in the next shot it completely disappears. (00:58:50)