Continuity mistake: In the opening scene, Mort closes the door of his jeep before he goes into the hotel room. You can hear the sound of the door closing and it's visible in the rearview-mirror. As the camera moves out of the room, the jeep door is completely open. (00:02:05)
Suggested correction: The door just didn't actually catch. I've had cars like that, especially during the winter.
Given that we see it stay closed for almost 4 seconds and hear it catch, it's a valid mistake.
If you've ever lived where it snows a lot, you'd know that door catches accumulate moisture (ice) and can open slowly, as it did in this case.
Continuity mistake: In the Moscow car chase, Bourne's car is hit from the driver's side by a patrol car. The driver's side window breaks. In the next few shots, you do not see any broken glass on Bourne. In the very next shot the car is not damaged on the driver's side. (01:25:25)
Continuity mistake: When Dr. Gordon picks up his tape, the way he holds it changes instantly. (00:06:50)
Continuity mistake: There is a scene in which a ghost shoots harpoons through the back door of the Mystery Machine. In the next shot, the harpoons are gone, and when the van gets back into the city you see a shot of the back and there is no damage whatsoever. (01:03:20)
Continuity mistake: When Vince leaves the freezer and is making his way onto the elevator, he is carrying a Baretta model pistol. When he shoots as the elevator doors are closing the camera cuts to a Glock model pistol, then back to the Baretta again. When the elevator reaches the upper level, the woman picks up the remains of the backfired pistol and it is back to the Glock. (01:21:15 - 01:24:30)
Continuity mistake: We see Tom standing in the river catching fish, yet when they start running from the bear, the water is gone.
Continuity mistake: When Emily is spying on Cody on the sightseeing bus, she sits down and the camera goes to a close up of her face and we see small worm like camera device comes out of the right side of her sunglasses, but when it cuts to the next shot, further back from her face, we can see the device has disappeared even though no time has passed between shots. (01:11:10)
Continuity mistake: When Angelina Jolie destroys the mirror, you can see (just freeze the shot for an instant) that the mirror has been broken completely. Yet, in the next shot, she watches her reflection and there's still a lot of mirror unbroken. (01:31:30)
Continuity mistake: Right before the Demolition Robot starts tearing through the house, Spooner is talking to the cat, and in the close up shots of the cat it is sitting down, but in the shots of Spooner with the cat, it is standing up.
Continuity mistake: When Karen goes into the cupboard upstairs, prior to meeting Toshio, she picks up a book. In one shot she picks it up by the page side, then when it cuts she is holding the spine side. (00:17:40)
Continuity mistake: When Wynn looks at Rains' file, the drawer her file is in is slightly open before he finds it. The shot cuts to Dodd reading the paper, then back to Wynn, and her drawer is shut. (00:32:40)
Continuity mistake: A montage scene of newspaper headlines early on has March 12, 1939 as the date. Much later in the film, Jude Law asks Gwyneth Paltrow the date so he can calculate the position of a star. She responds "March 2" but there is absolutely nothing to indicate that nearly a year has passed.
Continuity mistake: When Josh Hartnett is in the hotel dreaming about meeting Lisa, and he is driving around in his friend's Mustang, the wheels/hubcaps on the car keep changing.
Continuity mistake: When the two villagers throw the slab of meat on the rock for the creatures, it lands rib side up. A second later the meat is shown from a different angle, and now it is lying skin side up. (00:38:05)
Continuity mistake: When the coach is tape recording the little kid, he gets a drop of soda on the tip of his nose. In the next shot it's gone and the kid's nose is dry.
Continuity mistake: Towards the end of the film Nicole Kidman is having her wedding photos taken. The photographer poses her for the shot, but when he actually takes the photo, the background has changed. When he poses her, there are just trees and bushes behind her, but when he takes the photo, the trees and bushes are gone and people are walking around.
Continuity mistake: When Ash breaks the window in the house at Long Island all the glass disappears in the window, apart from a little at the top. However, in the next shot when Telly and Ash walk through the window, all the glass has vanished.
Continuity mistake: Ashley Judd is sitting in a bar with Andy Garcia when an ex boyfriend walks in. She says to Andy, "I do not get involved with ex-boyfriends." During that line the camera is to her left and she is holding a drink almost to her mouth. While she says the word "involved," the camera switches to her right side and she is not holding a drink. (00:31:00)
Continuity mistake: When Marco is in the library searching the internet for information about the scientist, he isn't wearing headphones. Then he notices the security camera recording him, and in the next shot, from the camera's POV, he's wearing them. When it cuts back to 'our' regular view they're gone again immediately, and he puts them on to listen to the computer.
Continuity mistake: Nell writes a note to Julia after she misses their morning run. Between shots the handwriting of the note changes - the letters are different in spacing and size. (00:46:35)