Continuity mistake: Master Lui at his first appearance in the movie kills the traitor slicing his throat with burning tongs which he points right away at the eyes of the protagonist. Sammo Hung's grip on the tongs changes between shots. (00:11:00)
Continuity mistake: During the climax, when the old-fashioned Atari-controller is lowered down from the UFO, watch closely. In the first two shots, it's swinging back and forth rather quickly and dramatically, however, immediately from the third shot on, it's suddenly barely swinging. It's too instantaneous between edits to be the result of it naturally losing momentum.
Continuity mistake: In a scene at a night club, Colin Firth's friend has a glass of red wine in his hand and then he has a glass of white wine.
Continuity mistake: The glass window the guy jumps through shrinks in size and has more glass in it in the next shot, when the copper looks through it. (01:03:00)
Continuity mistake: Kevin Shepherd pulls over in front of her fiancee's dad. It's still a wide angle, but you can see distinctly both her and his left arm stretched forward; she is looking at her engagement ring, he has his hand on the steering wheel. Before the camera cuts away though, he lowers his arm; it is not acknowledged in the new shot, where both have still their left arm forward. (00:03:35)
Continuity mistake: Everly says she has a gift for her girl. Her mother is holding Maisey's shoulder with the bare hand, but in the next shot her hand is inside her sweater, and bare again in the following. (00:40:20)
Continuity mistake: When the plane is on the ground, it has two engines. When it takes off, it has four.
Continuity mistake: During the sniper shooting of Adrien Brody, you have both brothers standing outside of the bank door in the pouring rain. The rain is visible during this scene, but after the sniper shoots the suspect in the head and the Brody falls to the ground, during the closeup when the police move in, there's no rain drops on Brody. Hayden Christensen is still standing up with rain falling around him.
Continuity mistake: When Kat is asking the detective what he thinks happened to her mother, after Kat is in college and she visits home, the detective lights a cigarette. We see him move the cigarette out of view and when he brings it back there is barely 3 or 4 drags left. The camera cuts to Kat and back at the detective and there's over half of the cigarette left now.
Continuity mistake: On the beach, JJ is talking over Kathy when she asks "what pact?" However when he plays back the recording it is just Kathy speaking.
Continuity mistake: The glass that was dropped and shattered on the floor had a different pattern of fragments when Mitch [Robin Williams] knelt to clean it up. Most obvious was that the majority of shattered pieces settled toward Mitch's feet but were on the opposite side of the largest piece of glass during clean-up. There's also a "stupidity" in the way Mitch wiped up the glass - pressing down on the thin towel (apparently to entrap fragments), which is most likely to result in getting pierced. (00:01:40)
Continuity mistake: Stretch takes the licence plate off the limo just before it's stolen. When he's clinging onto the bumper as it's being towed, the plate is back on.
Continuity mistake: When Elizabeth Banks is getting out of Amos' car, when they get back from Bible study, from Banks' angle, you can see that his hand is on the knob on the steering wheel, whereas when the camera changes to Amos' angle, he isn't touching the knob. When the camera changes back to Banks, you can see his hand back on the knob. (00:48:10)
Continuity mistake: At the end of the film we see stuff being crossed out in a notebook. The lines that are drawn through the words keep changing from being perfectly straight to being at an angle.
Continuity mistake: In the scene where Tommy is arguing with Bob Crewe after the song "Trance", Tommy puts his arm up on the music stand while he argues. In the next shot Tommy's arms are now at his side. When the camera comes back to Tommy, his arm is on the music stand again. (00:49:50)
Continuity mistake: When April shoots the alien, they all go outside to look at it. Behind them, you can see the windows boarded up, but they don't board them up until later in the movie.
Continuity mistake: When the crocodile catches the man he bites his right foot off. 5 seconds later as he falls into the water his foot is back. (01:21:05)
Continuity mistake: As the jeep with the killer goes over the cliff and smashes face down you can see nobody is in the jeep as it disintegrates the front part. (01:14:00)
Continuity mistake: As the two assistant workers walk away from the prison building at the end of the first day, Charlotte Gainsbourg's grip on her folders switches between shots.
Continuity mistake: When Michael Keaton goes to his dressing room following the light accident, the note on the flowers changes. It first reads: "They didn't have the whatever you wanted." After he removes his headpiece, the note reads: "THEy didn't have whatever you wanted - SAM."