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.
Visible crew/equipment: When the security guard opens and then closes the vehicle door, you can see a crew member's feet.
Continuity mistake: When Frank is in the warehouse about to make the trade for the family, the big tilt-out window behind him is open or closed depending on the camera angle.
Continuity mistake: During the fight between the vampires and Anton, the vampire stabs Anton in the hand with the scissors and Anton kicks him in the face. When Anton starts his kicks the vampire is still holding the scissors that are imbedded in Anton but when the shot changes and Anton lands the kick, the vampire is a few steps to the side and not holding the scissors anymore. (00:27:55)
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: As the girls run from the killer, the one girl is shirtless as she starts to run, holding her shirt in front of herself to cover her chest. The camera changes to a rear view and now she is running with the shirt in her hand swinging wildly. The camera changes again and suddenly she is running and putting her shirt on, already pulled over her head, a major change from the last shot. Finally, the camera angle changes again and she has her shirt on completely. All of her shirt/hand positions change instantly between shots.
Revealing mistake: When Gene's bodyguard (the one with the moustache) shoots Slasher and Duke, just before Slasher is shot the bullet hole effect is visible on her forehead (sightly concealed by make-up) just before the actual 'shot'.
Continuity mistake: When Tyler injects Brigitte for the first time at the hospital, look carefully at the syringe. You'll see that in the first shot its content is 1/3, and in the following shot is now 1/2 full.
Visible crew/equipment: When the helicopter lands and the lady gets out, watch as the two men walk in front of it and begin chatting away. In the front of the helicopter, you can see the reflection of the boom mic operator walking around slowly for QUITE A WHILE as they walk by the front of it.
Visible crew/equipment: Within the first few shots when Laramie is driving his convertible down the highway, as the camera first pans across the shiny side of the car, the camera equipment is visible in the glare.
Factual error: The Great Exhibition was held in 1851, roughly 15 years before the film takes place.
Continuity mistake: Vincent drives a black Cadillac Esplanade throughout the movie. In the scene where Ben and his security advisor tail Vincent to his base of operation, Vincent turns a corner and the Cadillac becomes a black GMC Yukon. When he arrives, it is a Cadillac again.
Continuity mistake: Near the end of the movie, Kate's hair is wet and she has a bloody nose. When she finds the platform again her hair is a lot dryer is and her nose is not bleeding.
Continuity mistake: When Joey is participating in the concert he goes along with pretending to be cut up. His jeans are clean until they put him on the glass table, when they're covered with fake blood. In the next shot, they're clean again and they start to cut him apart with the fake chainsaws.
Continuity mistake: When Maria and Juan are eating arepa and soda, in the shot when she asks him not to talk badly about her sister, Maria has full hair on her face, the shot changes and then it is clear.
Continuity mistake: When John C. Reilly and Diego Luna are walking in the street and the guy snatches the briefcase, the briefcase switches hands. Just before the snatch it is held in the left hand, but the guy steals it from the right hand. (00:53:10)
Continuity mistake: When Lynn first finds out about the Olson murders, their house is two doors down from where she is house sitting. Later on, when Detective Peters mentions the murders in passing, he states that their house was three doors down.
Revealing mistake: Robin Williams is working on Bannister's rememory, scanning newspaper articles. Under the first headline, "Bannister Eyes Future," the copy reads, "Whoever wrote these headlines had as much fun as I did setting them in type and formatting them into newspaper articles. But then, this sort of headline appears in the paper regularly, so maybe we all just want to have fun. Fun: such a precious commodity these days."
Continuity mistake: At the Crematoria mountain, Kira gets stuck in a small hole after the sunrise. She tries to climb again, but the rocks are so hot, she can't even touch them. She crouches and talks to Riddick for a while. Then, while standing up again, she touches the rock wall, but doesn't appear to experience any discomfort from the supposedly baking hot surface. (01:16:05)