Continuity mistake: When Gwen is watching the soap opera Santa Gruz, together with Eddie, in the front shots of the TV screen, you see a video cassette on the top of the TV with the heading "SONY". But, in the side shots of the TV screen, you see that the same video cassette is turned. (00:58:45 - 00:59:45)
Continuity mistake: I don't think it's quite a mistake, but in almost every scene with Madonna, she has a mysterious shadow over her forehead. In full shots, no shadow, but when they cut to her close-up, there it is. It's more annoying than anything else (aside from her acting).
Continuity mistake: When Tony is in the lesson talking about vampires, the blackboard behind the teacher is free of any writing. Then, between shots, '300' is written on the blackboard, even though the teacher didn't write it.
Continuity mistake: When Tony is stuck in the tunnel in the prison and is talking to Wolf, there are still several feet of tunnel ahead of him before the end of the tunnel. But when Wolf gives him a push, he is shown coming right out of the tunnel's end.
Continuity mistake: During the climactic landing sequence at the end, the point of view shifts rapidly from head-on to alongside and back. Watch carefully at the first side-on view just as they're touching down; the nose of the shuttle says "Columbia". When it switches to the next head-on view, the wings say "Daedalus".
Continuity mistake: In the underground garage scene with Russ, Rusty and Janet, Rusty's hair is combed straight down and very neat when he comes out from behind the pillar. When Janet says, "I should have worn my magic bra and panties.", Rusty starts laughing and his hair is messed up. But then when Rusty is snapping his seat belt as he's sitting in the Porsche, his hair is back to being neat.
Continuity mistake: After Eddie serenades Claire at her window, they go to talk on her front porch. Eddie's coat alternates being completely on and halfway off between shots. Keep an eye on his right shoulder.
Continuity mistake: When Kevin and Perry are DJing in Kevin's room, there is a green lava lamp in front of the decks. In one shot the lava lamp is switched off, and in the next shot the lava lamp is switched on, and in the next shot it is switched back off again. (00:21:05)
Continuity mistake: The door that the boys find in the pile is green. For one shot in the junkyard the door is white.
Continuity mistake: Chris Rock and Morgan Freeman are outside of Rosa's apartment, looking in the trunk of Betty's car. The cut-out of Dr. David Ravell pops out. Chris Rock throws the cut-out on the ground and stomps on it. Chris Rock has on white tennis shoes. Later, when Chris and Morgan are inside Rosa's apartment, Chris Rock is wearing black tennis shoes when he is with the sheriff, taking his gun and handcuffs.
Continuity mistake: In the beginning of the movie, the pan of the house shows the lava lamp on. While the camera is on Jesse, the lamp is off, and when it leaves him, the lamp is on again.
Continuity mistake: In the scene at the carnival, Ryan hands Ashley a drink that he just bought. The drink is full to the top with ice and a lemon. Before Ashley even drinks any of the drink, she walks over to a carnival ride and you can see that her cup is empty.
Continuity mistake: When John Cusack is at a house after the funeral, he is standing in front of a fireplace. You can see the boom microphone dip into the top of the screen above his head.
Continuity mistake: In the beginning of the movie, when Al (Freddie Prinze Jr) meets Imogen (Julia Stiles) She introduces herself as a freshman, and he introduces himself as a sophomore. the movie spans over the rest of the school year until she goes away for the summer. However, at the end of their first summer apart, Al is eating dinner with his dad and they are discussing his upcoming senior year and post-graduation plans. It should only be his junior year.
Continuity mistake: After the dummy is in the water with the camera and the killer comes back to check on his "garden", we see the dummy from behind while he's swimming towards it. His hair barely moves. Then we see the dummy from the front and the hair is flowing freely in the water like everyone else's.
Continuity mistake: When Leslie Nielsen came back from robbing the guys house the man who lived in the house came over to Leslie & started to talk. Later on Leslie put some blue paint on the man. When the camera angles change, parts of the paint splashes are missing on the right side of the man's chest.
Continuity mistake: When Ray gives his girlfriend the present right at the start, her bag moves up her arm when the shot changes. (00:01:10)
Continuity mistake: When the they first show the Evil Snow-Plough Man, he's chasing kids and they run off to the left side of the road as proven when the kid's sled gets crushed. However, once he's past, they all pop up from a mound of snow on the right side of the road.
Continuity mistake: The grown up Billy in the end of the movie has brown eyes where as Jamie Bell's (Billy's) eyes are blue.
Continuity mistake: In the scene where the Dr is explaining that his daughter might be a lesbian to Helen Hunt's character, when they move over to the desk area Helen's arms move from both hands leaning on his chest to only one back to both.