Continuity mistake: When Nicholas Cage is being escorted to fetch the roll of film from his car, there are a few scenes where the accountant is holding a gun to Nicholas's head. When the camera is directed at the accountant, two hands can be seen grasping the gun, but when the camera is facing Mr Cage, initially there are two hands but after the next switchback there only appears to be the one! (01:20:50)
Visible crew/equipment: When Homer follows Rose Rose inside after finding out she's pregnant, there is a visible "T" taped on the floor for him to stand on.
Continuity mistake: When he is playing Tetris, he is playing a different game every time. (00:43:35)
Factual error: The priest says that St. John saw the number 666 in his vision, but it was actually 999 inverted. St. John wouldn't read modern Arabic numerals like we do, it would be Roman numerals. The number 666 would actually be DCLXVI. (01:05:40)
Continuity mistake: When Silent Bob renders the demon disabled by using the anti-odour spray, you see him take the spray out of his coat and spray with his thumb. However, it cuts to a front view, and he is clearly seen using his index finger. It then cuts to Bob's rear, and he is, again, spraying with his thumb.
Continuity mistake: When Sam and the other girl fall down the mountain, at one shot Sam unlocks the girls snowboard and it drops down the mountain but at one shot before the ski patrol throws the rope down to them you can see (for a second) on the right side of the girl, the corner of the snow board. Then she doesn't have it.
Continuity mistake: The first time Matthew Perry's in Neve Campbell's apartment before he realises she thinks he's gay, he fills two glasses of wine in two very different glasses. He hands one to her and holds the other himself, in the next shot they hold different glasses, then again in the third.
Continuity mistake: The tape is labelled "Vincent Grey" in the first shot, but the label disappears in the next shot. (01:11:32)
Continuity mistake: When Parkis the detective comes to give his first report Maurice is shaving. The shaving cream on Maurice's face keeps appearing and disappearing throughout the scene, most obviously when he looks aroud the corner. (00:23:40)
Continuity mistake: When Tracy sets up her card table before school there's a close up of each leg being flipped out. If you count; theres five legs shown from a four legged table.
Continuity mistake: When Craig first discovers the portal door his crouching position changes slightly between the camera shot inside the tunnel and that from the office, and again when he closes the office door and goes back to the portal door.
Continuity mistake: When Sikes is put into the headpiece and Claw has the power turned up full force the chin strap is first around Sikes's chin, then it isn't, then it is.
Continuity mistake: Right after the Rabbi is shot in the beginning of the movie by Dominic, we see the two prophets check to see what was taken from the office. We can plainly see the dead Rabbi take two deep breaths during this scene.
Other mistake: When the sex scene with Robert De Niro and his lover is over, you can see that he is wearing underwear.
Continuity mistake: At one point about three-quarters of the way through the movie, when Lowell Bergman (Al Pacino) and Don Hewitt (Philip Baker Hall) are talking, watch in the background as a certain lady walks past after Don says something. When we cut back to him he says something else, but the same woman in the background appears and walks exactly in the same direction, just like in the previous cut. (01:52:35)
Continuity mistake: When John Travolta is searching the dead woman's house he has latex gloves on. When he pulls out his gun and heads into the basement, his gloves are gone when he turns on the light. Then they reappear a few seconds later.
Factual error: During the final game against the Knights, whenever the score is shown on "TV", the Knights' score (home team) is shown on top and the Sharks' score (visiting team) is shown on the bottom. In sports, the visiting team's score is always on top and the home team's score is always on the bottom.
Suggested correction: In American sports yes, but not in other sports. In fact during the 1970's, NBA scores showed the home team score first.
Continuity mistake: When Mary's grandma is teaching her to dance, Mary falls and breaks the table, but later when it flashes back the table is fixed then it's broken again.
Visible crew/equipment: A boom mike drops into frame during Jay Mohr and Scott Wolf's dialogue at the supermarket.
Revealing mistake: When the Japanese tanks are firing upon Godzilla, one of the pyro effects catches the Godzilla suit on fire (at the arm). One can see the stunt man begin to frantically shake his arm upon this realization before the editing cuts to another shot.