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: During the scene of the first meeting between Gus and Ruby, Krysten Ritter's hair moves back and forth (behind or in front of her left shoulder) between shots multiple times (most obvious example: when he offers her a drink). (00:12:45 - 00:14:35)
Continuity mistake: When Thomas first arrives at the Clay Pits, Timothy can be seen with a train of trucks. In the next scene, they have disappeared.
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: When the plane is on the ground, it has two engines. When it takes off, it has four.
Continuity mistake: When Nick is instructed to leave hotel room #700 Chord verbally tells him to "go outside and turn right." but the on-screen arrow points left and we see Nick turn left. (00:29:39)
Continuity mistake: During the car chase, the white jeep goes from damaged to undamaged between shots. (01:08:00 - 01:09:00)
Continuity mistake: Tinker bell and her friends throw their swords on the barrel to defeat the pirates with their powers instead. The swords disappear in the next shot of the barrel.
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: In the beginning, Schapelle checks the boogie bag in in the check-in counter. Then she's seen carrying it over her shoulder. Then a baggage handler takes it away from the check-in counter.
Continuity mistake: In bedroom the Thursday morning they are about to meet her sister, Jessica Alba leans in to kiss Pierce Brosnan. He begins quoting Hamlet, Alba's hair is cascading in front of the left shoulder with very little down her back. Close-up on Brosnan and a thicker mass of her hair is present, less sparse than it was before. (00:05:05)
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: 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: Throughout the film, Nicole Kidman's hair changes color. In one particular dinner scene, her hair is everything from light blonde, to dark blonde, to red.
Continuity mistake: When the guy is protecting his home and clearing the window with his shotgun you can see him breaking the glass on the bottom left window pane. In next shot it has the piece there again. (01:43:55)
Continuity mistake: Carrie's height changes constantly.
Continuity mistake: In the observatory after the rain storm, Stanley lies down on a bench with Sophie sitting at the end of the bench. Later, when Sophie is walking around, Stanley has now moved all the way to the end of the bench where Sophie was sitting.
Continuity mistake: Jay is mopping the floor after promising on the phone to his dad that he'll bring his non-existent fiancee to the wedding. He tries to talk one of the nurses into joining him. While doing so, he stands before her leaning on his mop with his left hand on top, which switches to the right hand between shots. (00:06:40)