Visible crew/equipment: As Will and Jack duel up top in Brown's shop, in two close-up shots a large plank is visible at their feet with two long black marks along each side detailing where the beams are supposed to be, so that Orlando Bloom and Johnny Depp know where to land as they supposedly leap from beam to beam and feign keeping their balance. (This is ONLY visible on the video version.)
Deliberate mistake: On the fields of Pelennor, after the great battle, before Pippin and Merry meet again, Pippin's Lorien brooch points to his right. As Pippin is walking and looking around, his brooch is pointing to his left. When Pippin is next to Merry, the leaf is pointing to his right again. Obviously the second shot is flipped. (02:16:30)
Continuity mistake: When John says, "You offend reason sir," Peter floats up. The large light fixture is hanging from the ceiling. However, in the next shot facing Peter when he says, "Just think happy thoughts," where is the light fixture? It's gone so Peter can fly around the ceiling, but it's back again in later shots. (00:21:15)
Continuity mistake: When the dentist wants to put Nemo in a bag, it's a resealable one with a seam at the top. When he finally catches him, it has changed to a normal plastic bag.
Deliberate mistake: Almost trivia, but not quite. When Mystique's looking through the guard files to find a suitable candidate, lots of photos flash up very quickly before she finds the guy she uses. Of note is that Bryan Singer pops up in guard uniform (with his own name), and so does someone called "Donner, L". This is most likely referring to Lauren Shuler Donner, one of the producers, and sex is specified as "F", but the photo is of a stubble-coated man. (00:23:10)
Continuity mistake: When the Angels are walking through the sprinklers after getting shot, you can see the bullet holes in each one of the Angels' shirts. When they get to the car, and it blows up, Cameron Diaz's bullet hole disappears. (01:20:00 - 01:21:30)
Revealing mistake: In the subway scene, when Neo gets slammed towards the wall (and crashes into it) it's visibly Keanu's stunt double.
Deliberate mistake: When Morpheus is facing the twins' car, the road's not all that wide, and there are concrete barriers both sides of him. After he rolls to the side and slices their car, we see a side shot, quite far back from the road, and the barrier closest to the camera has disappeared (presumably so we get a better view). In a closer view, both barriers are back again. (01:29:25)
Continuity mistake: When Natalie Imbruglia and Rowan Atkinson are trying to enter John Malkovich's "chateau", when Natalie is climbing a ladder a tattoo is visible on her lower back. Later, when Pascal Sauvage (Malkovich) is being crowned, Natalie is fighting a sniper on the upper-level of the church. When the sniper pushes her away, the stunt double for Natalie falls to the floor and the tattoo is missing.
Revealing mistake: When Linderman dashes at Jason and impales him with an American flag, Will is dragging Lori (who is supposed to be unconscious). He's dragging Lori by her arms... but when he suddenly reaches behind his back with his right arm, her right arm stays up in the air. (01:13:50)
Factual error: In the scene where the kids are viewing the cupcake baking, there is a sign in the corner reading "laugh". The sign is facing towards the chef, when it should be facing the crowd. (00:31:40)
Continuity mistake: When Algren teaches a soldier to shoot, the soldier has a chin strap below his lip. Yet, in the next shot there is no strap. (00:19:35)
Revealing mistake: The Acheron fires many devastating blows on the Surprise and the effect is visible in close-ups and a wide shot. However, after Mr. Mowett yells, "Relieving-tackles on the tiller! You men collect the wounded!" there is another wide shot of the Acheron in the foreground and Surprise in the distance. In this shot Surprise has NO damage whatsoever! (00:11:00)
Continuity mistake: During the fight in the outdoor market, Jackie Chan flips a table over with the ridged side facing upwards. In the next shot the ridged side is facing down.
Continuity mistake: When a lighting rig bumps into a piece of wood, its front wheels and the wood are near the edge of a tile, but in the next shot, it is towards the center of it. (00:28:25)
Continuity mistake: When the Rock finally starts using guns, there is one shot where the three holes in his tee shirt are on the right side of his chest, because it is a flipped shot. The holes are on the left side of his chest in every other shot. (01:23:20 - 01:24:40)