Visible crew/equipment: At the end when Sidney's dad falls out of the closet, if you look closely you can see the hands of a crewmember who was in there too, pushing items out after him. (01:42:40)
Revealing mistake: Leonardo DiCaprio blinks after he dies. (01:50:28)
Continuity mistake: At the beginning of the movie when Ashtray is knocking at his father's door, his father answers the door with a chocolate bar that already has a bite taken out of it. When his father lets him and closes the door, the chocolate bar is still wrapped.
Visible crew/equipment: Brandi drives over to Darnell's place and throws a brick through his windshield. When the two of them are arguing and Brandi pulls off, you can see a reflection of a crew member holding a camera.
Continuity mistake: When they are in the Whitehouse, and Beavis has turned into Cornholio, he picks up the "Red" hotline phone on the President's desk, and is talking to the nuclear bomb officials. Later, when they are in the President's office again, getting their certificates, there is now a black phone on the desk, where the red one was. (01:03:05 - 01:11:00)
Continuity mistake: When Jennifer Tilly is in bed wearing some kind of skimpy pink thing, only one strap is always on her shoulder, but between shots it changes from left, to the right, back to the left, repeatedly. Every two or three shots.
Deliberate mistake: In the towel-dance scene after Demi has put on her white panties and spins off the towel from her hair she starts to rip off her body towel. Then in the next frame the towel is again tucked in. Apparently they didn't want Demi topless when she leaned over to slip on her blue shorts.
Plot hole: After the kidnappers kill the trooper and then one chases after the 2 eyewitnesses you can see that they are on a straight road (no turns and he catches up to them fairly quickly) but the next morning when Marge arrives on the scene of the 2 bodies she arrives from the direction of the trooper's body (the first shooting). After examining the bodies of the eyewitnesses she asks her deputy "where the trooper is" and the Deputy points in the direction she just came from and states "down the road a bit" how did she miss it? She would have had to have driven right past the trooper's crime scene to get to the 2 bodies.
Continuity mistake: After he met the woman who helps them, Stephen Baldwin is wearing a shirt over his shoulders. In the very next cut, it is missing, but it reappears in the next cut.
Visible crew/equipment: In the early scene, when Mel Gibson is talking to his son, a boom mic can be seen at the top of the screen. (Boom mics drop in several times throughout the film.)
Visible crew/equipment: In the scene at the end of the movie when they're in the bar in Mexico, and Archie starts a fight, when you see the dog start to snarl, you can see two hands holding on to the dog's back legs.
Continuity mistake: Towards the end, Danny Aiello fires at James Spader, and we see a brief close-up of the door frame being hit - there are two bullet holes seen in the door - one above and just to the left of the other. Then we cut away, and when we cut back and see James Spader looking around the door frame, there's just one bullet hole.
Continuity mistake: When we first see Daniel in the taxi and the guy jumps in the back, when Daniel removes the steering wheel from the car the armrest has all four electric window switches present but when he changes the wheel whilst driving with Emilien in the back for the first time, the armrest only has one switch meaning a right hand drive modified car was used in motion shots. Hard to spot but its there.
Other mistake: Carolyn Stilton shoots Blondie O'Hara in the head and is lying dead over her dead husband. Just before the final scene starts she begins to open her eye.
Revealing mistake: From the front view of Karen's gun, you can see empty chambers.
Continuity mistake: When Renton goes home with Diane, after they finish having sex, she tells him to get out and leave the room. As Renton sits up, it's very obvious that he's not wearing any protection. Not thirty seconds later, he peels off his condom in the hallway.
Continuity mistake: John Smith's guns can hold about six dozen bullets apiece.
Revealing mistake: When Tisean has just died and Stoney is getting out the car, Tisean is still breathing.
Continuity mistake: In the final battle scene between Geena Davis and Craig Beirko, Beirko's character slashes Davis' character across the stomach (upper right hand side). In the next shot, the wound is located on the lower left side and in a subsequent shot, the wound has multiplied to become two wounds: one in the upper right hand side and a second in the lower left hand side.
Continuity mistake: When Campbell and Cole are inside the Chinese herbal-like shop, the woman behind the counter offers Campbell a drink. When he goes to drink it he holds the cup with two hands but in the following shot he's holding it with only his right hand. (00:14:05)
Suggested correction: The trooper wasn't visible from the road, he was dragged into the ditch. She also could have been asking if he was in the hospital or morgue.
Theories don't resolve plotholes.