Revealing mistake: When the cheese sandwich in the toaster catches fire, it engulfs the cookies. When the camera is tightened in on the boxes of cookies, you can see a petrol line running down the cookies.
Revealing mistake: When Beowulf is fighting Grendel in the sanctuary and is climbing up into the rafters, his black support wire is visible. (00:44:10)
Revealing mistake: Jude Law is inside the game and he's supposed to be American. When he finds out that his bio-port has been infected he says his next line in his normal British accent. (01:20:10)
Revealing mistake: When Machine slits Max's throat no blood comes out of the wound. (01:21:55)
Revealing mistake: When Sheila asks if Terrance and Phillip have any last words, Phillip says, "Last words, how's about get me the f**k out of this chair!" When he does, his arm leaves the arm of the chair and goes through the restraint, which reappears instantly after. (01:03:00)
Revealing mistake: During the opening sequence, when the fish and game officer is just about to be attacked while looking inside the nest, there's a clear reflection of his lower body as the camera moves closer from behind him. This reveals the diver is in some type of tank, otherwise, this could be a piece of equipment, like Plexiglas (or similar,) put in place within a real body of water for filming purposes.
Revealing mistake: As Lawrence III walks up the stairs to his console, he clips through them in the process. (00:01:43)
Revealing mistake: In almost every scene that the crab is in, just watch the space above it and you can see strings moving it.
Revealing mistake: Pnub's (Elden Henson) head in the scene where Anton kills the two cops is obviously animatronic, it's eyes are clear blue and Pnub's eyes are brown.
Revealing mistake: After Christine gets out of the shower, we hear the director cue her by saying, "Go," before she walks past the camera.
Revealing mistake: When Homer is sitting outside (on a dock?) reading a letter from Dr. Larch you can see through the envelope and the letter because the white paper is thin. You can tell there are writings on the letter but it is equally obvious that the envelope is blank with no address written on it.
Revealing mistake: When the guys go to see Tom at the BBQ, he has his head in a support cage. Every time he moves, and particularly when he laughs, this cage moves around and wobbles. The point of these cages is to keep the head still and in line with the spine, and are bolted into the bone itself. Therefore, not only should it be impossible for it to be moving, it would seriously hurt if it was.
Revealing mistake: Anytime Billy pitches, and they give a replay, you can see on replay that the catcher is not John C. Reilly.
Revealing mistake: As the Spleen and Invisible Boy stand silhouetted in front of the moon, their motions are easy to tell as the film being run forward and backwards.
Revealing mistake: During the fight scene on the riverbank when the white haired man lands on the pavement, the "concrete" pavement moves.
Revealing mistake: At the end of the film, the screw is tapping on the window to get out and Hogarth moves to put the box down. The box completely vanishes from the shot for a few frames towards the end of the shot.
Revealing mistake: When Tsukiko's neighbor has his eyepatch removed, the prosthetic makeup for his scarred face and eye looks incredibly fake and unconvincing, and you can tell his bulging eye is just a painted piece of plastic with fake skin around it.
Revealing mistake: When the wishmaster stands up, the camera pans down to the glowing red gem on the floor. You can tell a crew member is shaking the thin piece of "flooring" to make the gem move.
Revealing mistake: In addition to the chain and lock not being in a position to actually secure the entrance to the "Metro Christian Shelter", the board covering the entrance does not appear to be securely attached to the building on the right side. Furthermore, when the men move the board over, it is a rather thin piece of plywood/board that can easily be kicked in. (00:17:17)
Revealing mistake: When the toys are watching Woody being stolen the games machine on top of the TV doesn't have its controllers plugged in, but Rex was playing earlier with a wire coming out of his controller, which clearly wasn't actually connected to anything.