Deliberate mistake: When the two assassins enter Leo's bedroom and try to gun him down, the one on the right has left his tan overcoat open. He's the one that escapes from Leo initially. Shortly thereafter, Leo guns him down, firing up into a second story window. At this point we see that the assassin's coat is now buttoned up, probably to conceal the numerous squibs used in his death scene. (00:41:00)
Other mistake: When Seagal is in the factory in Jamaica, a "Jamaican" bad guy jumps up from behind a barrel, you can see that he is in fact white - you can see the make-up line on his neck, and his wig is crooked.
Revealing mistake: In the scene where Mel Gibson and Robert Downey Jr. crash upside down in the jungle, the windshield of the helicopter breaks out. When they release their belts, the windshield is visibly taped back together for them to crash through.
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.
Deliberate mistake: Towards the end of the movie, when Van Damme and the Sandman are fighting in the boiler room, the Sandman gets kicked into an open furnace for some time and then jumps out covered in flames. It's noticeable that he still has a full head of hair, which is impossible. Hair would be the first thing burnt right down to the scalp within a matter of seconds.
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: The telephone on Scrooge's desk briefly disappears after his maid delivers an invitation to the archaeological society ball. (00:19:05)
Revealing mistake: During the party scene, when Jacob starts hallucinating, you can see the stick that one of the fake birds is attached to.
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.
Other mistake: When Big Boys' men drive through the garage door trying to escape, Dick Tracy, the cops and the goons start opening fire. Yet, nobody seems to feel the need to stop and reload their weapon. They just keep firing without ever running out of bullets.
Visible crew/equipment: As Nikita is dragged from the courtroom by the police, she rolls around. You can see that a pad has been taped to her lower back for protection. (00:11:45)
Factual error: Asystole (the lack of cardiac activity, also known as the 'flatline') is not treated with defibrillation (electric shocks) but with alternating doses of the drugs epinephrine and atropine.
Plot hole: Detective Mason Storm has been in a coma for a number of years, so how is it that on the day he awakens from the coma, he not only has the strength to move his bed down corridors, but also knows the layout of the hospital?
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: 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: 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: When the girls go to Steppes, Sara's skirt is only just above her knees, yet when she gets home and argues with her Dad the skirt has shrunk to just below her bottom.
Continuity mistake: When Harry Maddox is about to go for a ride with Dolly Harshaw, he reaches for his shirt and is mesmerized by the legs of his other love interest, Gloria Harper. Gloria catches Harry admiring her, with her head turned backwards, cigarette poised near her lips. In the frames immediately preceding this moment, she clearly does not have a cigarette, lit or unlit, anywhere near her.
Continuity mistake: When the nurse is wrapping a tensor bandage (also known as an Ace bandage) around Kinderman's hand and wrist, the way the bandage is wrapped changes between shots.
Other mistake: When Casey's men are robbing the Triads, Abbott says "Don't move or you're dead." He then turns to his left, and while facing left, he shoots two of the red Mercedes' tires. However, he is standing directly behind the Mercedes, so it would be impossible for him to turn to his left and shoot two of the car's tires.