Revealing mistake: Gracie hugs the Russian waitress in order to have a better view of the disc hand-off appear on the monitor. As she raises her left hand that holds the book/camera lens, we see that the digital feed that appears on the monitor stays steady and level, even though she is raising the book/camera lens higher and closer to her face. Obviously the feed that we see on the monitor is not taken from the book/camera lens. (00:04:10)
Plot hole: Peter goes into Carl's mind to save Catherine. When he's in there he sees the tank with the water nymph. On the tank are strange symbols which provide the FBI with the clue needed to find the latest victim. Makes sense so far. But, go back to the scene just after the FBI have captured the comatose killer and are looking in his basement. The FBI are looking at the contraption that the killer uses to suspend himself over the victim. On the contraption is the same symbol seen later on the water nymph's tank. Why didn't the FBI follow up the symbol then?
Continuity mistake: When Daniel is being chased by the Yakuzi in their black Mitsubishi Lancer Evo 6s, one of their Lancers crashes into the tanks. The car used for that crash is however a Lancer Evo 4, which is older than the Evo 6, and has a different front bumper, bonnet and rear spoiler. (01:17:25)
Continuity mistake: When Cage's character offers the money for his brother and the brother is in the car about to get crushed, the back window gets broken out twice. (00:15:55)
Continuity mistake: When Big Momma and Sherry park on the street in town the car they are in is a Mustang GT and when they get out and walk away the car is a Mustang LX. (00:42:10)
Factual error: A ham radio requires the person to hold down the button while talking. Numerous times in the movie they are talking without pushing the button.
Suggested correction: This is actually subtly addressed in the film. The magic which allows the radio to work across time also allows the two men to speak without pressing the button. There is a moment where Frank wonders what is going on with the radio and presses the button a few times to talk but then notices that he doesn't have to press the button to be heard.
If that was true, then it wouldn't make sense for them to continue to show Frank and John hitting the squawk bar throughout the film.
That is a separate issue. The mistake entry states that you need to hold the button to talk on a ham radio, which is true, but the magic ham radio in the film doesn't require it. If the actors continue to occasionally press the button that could be considered a character mistake but it could also simply be a force of habit by the characters.
Revealing mistake: Brad Pitt's tattoos appear to smudge during the last fight.
Continuity mistake: As Gal is in front of his pool, standing with his back to the rock face, an immense boulder is tumbling straight towards him. It comes down the mountain to his right. As it gets airborne it is still to his right. Camera cuts facing his right and it is shooting past his right side, still moving straight downward. All good. But as the camera cuts to the front of Gal, the boulder smashes into the pool a couple yards to the left side of Gal. (00:04:50)
Continuity mistake: There are seven Wharvey Gals. Three on the stage singing, three with the wife, and one that she's holding. One of the girls even says that there are seven of them. Yet in the end, when Everett and his wife are walking down the street, there are only six. One that she is carrying, and five following.
Continuity mistake: When Jet Li is playing football in the park and Maurice falls on top of him, Maurice's scar is on the left side of his lip, then when the camera cuts back to him it's on the right side. (00:50:40)
Continuity mistake: In the scene in which Leonard writes on the back of his picture of Teddy, "He is the one. Kill him," we see a shot of Leonard placing the picture on top of his tan jacket on the bed as he goes to write on it. Then, it goes to a close-up of the picture in which the jacket has disappeared and the picture is lying directly on the blue bedspread. It actually happens twice within that same scene. (00:15:15)
Continuity mistake: When Mathew Perry goes to Chicago to meet with the head Boss, Bruce Willis' wife comes to talk with him at the hotel. In the scene where he is brushing his teeth he picks up the mouthwash bottle and swigs some, then sets the bottle down on the counter. The camera cuts back to her, then back to Matthew Perry, and the mouthwash is gone. (00:32:50)
Continuity mistake: At the end of the movie, they come to take away the body of Big Baby Sweets, and it's night time. You can see the night sky behind the actors. However, after Sweets' makeup is wiped off, the camera pans back and you can clearly see the daytime sky behind them.
Factual error: In the scene where the FBI agents have taken Giovanni Ribisi in for interrogation, one of the FBI agents says at one point "...and I want the whole C:/ Drive backed up on a floppy.", which is pretty hard to do, if not impossible, unless you've got about a 5Mb hard disk drive (depending on compression levels). But later on in the scene where Ribisi is actually doing it, he does it in about 10 seconds...with a 1.44MB floppy.
Continuity mistake: In the scene where James Spader meets Keanu Reeves in the graveyard, we first see a Ford Taurus taxi driving through the gates, but when Spader gets out, the taxi is now a Chevy Caprice.
Continuity mistake: In the last scene Kiefer Sutherland throws his cigarette away and turns to walk to his car but when the camera angle changes he is still smoking it, when he reaches the car he throws the same cigarette away for the second time.
Revealing mistake: In the scene when Rusty hits Chip with the lamp near the end of the movie, you can see the lamp miss his face.
Continuity mistake: When Samuel Jackson is about to be shot by the two corrupt cops, the Vanessa Williams character comes up from behind and shoots the black one in the head and he falls down. Then, they show her talking, and the same black man's arm and partial shoulder are in the shot.
Continuity mistake: When the Wiccan girl and the guy writing the book were sitting at the table the guy knocks down the cup when he hits the table. In the next shot the cup is up again.
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.