Continuity mistake: When Danny meets Sam the second time he is bleeding on the floor. When he falls to the floor the amount of blood on it differs between the shots. (00:26:55)
Revealing mistake: When Kadaj kneels in front of Rufus Shinra, watch his sword. As he kneels, it goes through the floor.
Revealing mistake: Towards the end when Harmony calls Perry's phone as she's lying on the ground, Harry grabs the phone and looks at the caller ID to see her name. Unfortunately that's not the display showing who's calling. Anyone who has a Nokia phone will recognise that that's showing the contact list with just two entries - Harmony and a random number. The fact that it says "contacts" at the top of the screen is a bit of a giveaway.
Continuity mistake: In the very first scene in the movie, where we see Steve listening to the motivational tape, he is wearing a red tie with polka dots. Then, when he is shown walking toward his boss' office and he falls, you can see that his red tie has changed to a gold tie. When he is in his superior's office you can see that it is back to red, and when he goes to find Stavi in the restroom the tie is gold again. (02:00:00)
Continuity mistake: Right after the beginning credits, Jacques the chef walks through the door holding a plate of food with both hands. When the shot changes, he is walking through the door but is now holding the plate of food with one hand and has a fork in the other and has just taken a bite.
Continuity mistake: When Chelsea returns back to the house, she runs through the front doorway and the door behind her is still open. In the next shot, the door is closed.
Continuity mistake: When Samantha is sitting at the foot of the bed with an ice pack on her head, eating toothpaste, in one shot she spits some toothpaste out and it goes over Chris' hand. In the next shot his hand is clean. (00:36:55)
Continuity mistake: When Hal and Catherine are arguing before she goes to the airport, her ponytail switches between going over the front of her shoulder and hanging straight down her back between shots.
Continuity mistake: When Mr. Collins introduces himself to Mr. Darcy, Mary is behind them, talking to her parents. However, you can hear Mary singing at the piano (in the next room) at the same time, and then go on to see her there in the next scene. (00:40:20)
Continuity mistake: When Kutcher and Peet are in the restaurant, the amount of water in their glasses change from full to empty to full to half full, in about one or two scenes.
Visible crew/equipment: When Betsy is having the sheet pulled up over her, the lightning flashes and lights up the visibility. You can see a wire which is being used to guide the sheet.
Factual error: During the credits, as the house is shown, a paper wasp nest is shown hanging from the eaves. Crawling all over it are honeybees, which do not live in paper nests.
Revealing mistake: In the scene where Stripes is looking in the water at his reflection, his body and the reflection don't quite match up. You can tell by his movements that his reflection is computer generated. (This is verified by the audio commentary.)
Continuity mistake: Towards the end, as Willis and Pollack drive the van, Willis is seen inserting the magazines in two handguns. The next scene shows hims putting the second gun on the center console, it has no magazine in it.
Factual error: During one of the many driving scenes we see many cars on the side streets. At one point you can see a Mercedes-Benz ML SUV parked on a corner. This model SUV was not made until 2000-2001. Since the movie is set in the mid 80's this is impossible.
Revealing mistake: When Dekker follows Richards on a motorbike he drives through a glass door with wooden frame. The class shatters noticeably (about a half second) before the bike even touches the door.
Continuity mistake: After Amy stabs the knife into the table next to the bed, it changes position in following shots.
Revealing mistake: When Gretchen turns around while on the bed, a shard of glass in the frame flaps in the wind.
Continuity mistake: The girl is supposed to be bathing in the sea naked, yet when she emerges the camera shot is a little too low and reveals that she is wearing bikini bottoms.
Continuity mistake: Just before Burt gets ready for his record-setting attempt, he wraps some asbestos cloth around his leg to protect it from the hot exhaust pipe. This does not allow him to fit his leg within the cowling of the bike, so he throws it off and puts his leg in without the protective covering. As he inserts his leg into the cowling, you can see that his pants leg is bunched up around his calf, not tucked into the top of his sock, as is Burt's usual procedure. However, a close up of the leg only a few moments later shows the pants leg tucked into the sock, and he could never have done that once he was fully seated in the cowling.