Continuity mistake: Look carefully at the brochure Frank has about the Buffalo Chicken Wing festival, the building pictured is the same building as his daughter's school (seen earlier in the movie).
Suggested correction: While the buildings might look similar, they are different buildings. The school has 3 levels with rectangular windows with a pyramid top while the building in the brochure only has 2 levels of non-rectangular windows and more of a dome shape on top.
Continuity mistake: After the "car chase" the white car gets put in the barn. When the black car arrives it is covered in mud (so much they have to wipe it off the windscreen) from the dirt track. The white car only has a few specks of dirt.
Continuity mistake: The first time we see the young doctor doing his "lobotomy" in London Hospital (to the girl that was married to Prince Edward), Ian Holm comments on the procedure for some guest as they stand behind a glass window. You can clearly see the young doctor doing the third strike with his hammer in a reflection in the window. The movie cuts back to the young doctor and he is doing the third strike for a second time.
Continuity mistake: Just after Knoll has been beaten up we see Elwood sitting next to him. As Elwood switches on the light, we see that the left side of Knoll's face is covered in blood. After Elwood applies the bandage, the blood on his face has changed with much less blood on the left side. The blood was never wiped off.
Visible crew/equipment: While the group is deciding whether or not to take the blocked-off route 666, both Lou Diamond Phillips and the woman he is talking to are sporting equipment and crew reflections in their sunglasses, most notably the big, white reflectors.
Continuity mistake: When Shaun and Charlie are running from the police, they hide behind a dumpster until a cop car goes by and then Charlie leads Shaun to a meat truck. He opens the back and lifts up the door just far enough so that Shaun can get in. In the next shot, when Charlie is getting in, the door is much higher up, about four feet higher actually, than it was a mere second ago, and there was no sound indicating that Charlie pushed it up further.
Continuity mistake: After Cassie has met Shawn at the band stand, Shaun reaches out and holds her right hand, yet when it zooms in for a close shot of her, she is twiddling her scarf with her right hand, yet when it zooms out again, Shawn is holding her hand again.
Continuity mistake: When the man is laying out the photo files on the desk, he puts down files one, files two, and then file three. In the next closeup the position of photo film number three has changed.
Continuity mistake: At the slam dunk contest, after O completes his dunk, there is glass all over the court. When the kid comes to get the ball, you can see that all the glass is cleaned up and there again right before O throws the ball. (01:02:06)
Continuity mistake: Gordon mentions that his wife accidentally spilled hot water on his leg and burnt it, but the actor only occasionally limps on it, although we are shown that he has an injured leg. This is mentioned on the commentary.
Other mistake: In the warehouse near the beginning Fuzzy gets shot at close range with an Ingrams but there are no holes in his clothes and no blood nor are there any holes in the plastic sheeting behind him.
Continuity mistake: At the end, right before Matty is going to toss his keys inside the Cadillac, the window is only down a tiny bit, but when he actually tosses them the window is all the way down.
Continuity mistake: When the police secure the scene where Scotty was found a TV reporter makes a statement. She's standing in front of a tree with a big horizontal branch. When the camera angle changes the tree behind her is different with a much lower branch. (00:10:25)
Visible crew/equipment: When they first drive onto airport property, you can see the film crew in Jimmy's sunglasses.
Revealing mistake: When Ricky and Bobby knock the fishbowl over while fighting, you can see it separate into two clean halves before it even falls. (00:40:05)
Continuity mistake: When Remy falls through the barricade she is wearing a G-string, but when she strips down to mix up the scent she is wearing different underwear.
Continuity mistake: Right after Aki saves Gray and turns around to pick up the canister containing the plant off a table there is no table or ledge. If you watch the movie with the commentary one of the members involved with the movie says that it is floating on nothing. (00:16:50)
Continuity mistake: When Grace and Ms. Mills are sitting in the living room you can see a clock on the right, but in the next shot it's disappeared.
Continuity mistake: In the scene where Rock is trying to destroy Tima and the factory, the side parting in his hair frequently changes sides.
Visible crew/equipment: When Hubert punches the transvestite in the bar and she flies backwards, you can see the wires pulling her. It's hard to see but if you look at the black man in a white t-shirt and black trousers, when looking closer at the trousers you should be able to see the wire moving. (00:02:15)