Continuity mistake: When she gets the pizza from the guy at the door, it is in a white box. When she goes in and sets it on the counter, it is in a brown pizza box. Then later, when she is running away covered in blood, she grabs the knife on top of the pizza box, and it is white again.
Continuity mistake: When Mary first opens the phone book at the post office she lands on Finklestein but when she puts her finger on the name she chooses it as Hororwitz, even though she never turned the page again.
Continuity mistake: When Pierce Brosnan is first in the classroom, the writing on the blackboard keeps changing.
Continuity mistake: When Lex Luthor has his battle suit on and fighting Superman and Batman, the head and neck piece change dramatically and constantly. Sometimes the piece surrounds his head, leaving plenty of room and sometimes his head sticks out over the piece. And it's not a matter of angles, because in some shots, everything being the same, the side piece remains at ear level and his head is either above or below the head piece.
Continuity mistake: When Billy and Bolger are driving down the road after the funeral, they are on a 2-lane road, with nothing but grass and trees on either side. But when the shot changes so they're facing the camera, it's a 4-lane road with a lot more traffic. Then the road becomes much bigger with a median.
Continuity mistake: In part 2, as it shows the police cleaning up the crime scene from the end of The Final Chapter, they are shown picking up Jason's hockey mask to place it in an evidence bag. However the cut in the top of the mask from where he was hit with an axe in the previous film is missing. (00:01:05)
Continuity mistake: The concierge is trying to come up with a written answer to Mr. Ozu's Anna Karenina. She crumples the first sheet and there's a cut when she tosses it away; the pad changed position and all the other discarded messages are scattered differently between shots. (00:31:30)
Continuity mistake: Sophie Marceau's Jeanne meets the Hachette executive Robert (Didier Flamand). She enters the room with handbag and jacket in one hand. She then follows him into the other half of the room. Now she has her clothes in her right hand and her bag is in her left. Not just that; the man had the folder in his left hand in the first shot, but in the new one it's in his right. (00:04:25)
Continuity mistake: Mulan tricks her father into taking his medicine, and everyone has a laugh at him. Between shots she is pouring from the teapot first with the right, then the left, and one of the geezers sitting by is cackling with a different posture and hands switched as well. (00:05:10)
Continuity mistake: When Susan accidentally surprises Dane, Lucas and Julie while they are armoured up and asleep in the basement, the helmets worn by Lucas and Julie disappear between shots. (00:36:47)
Continuity mistake: When Max is going to stab Naoko at the end of the movie, he grabs her by the hair, but in the next shot he's grabbing her by the chin. (01:18:30)
Continuity mistake: The young 'au pair' does not have what it takes and resigns after falling into the fountain. As she speaks with the Caldwells, her wet hair is in front of her shoulders in a shot, in the reverse shot it is not, and so on. (00:04:20)
Continuity mistake: The position of the rifle David [Val Kilmer] dropped was at a different angle after he backed up and then walked toward it. (00:05:38)
Continuity mistake: During the fight, the extent to which the fire (starts on top of the mound) spreads toward the ground varies. Also, the fire burns downward through snow, but does not melt the surrounding snow along the sides and bottom of the mound. (01:15:35)