Revealing mistake: After the woman is strangled and the people come in trying to find the little kid, the dead woman is clearly seen blinking. (00:11:25)
Audio problem: On the first level of the video game, after Velma brings up what she remembers what Eric said about the Scooby snacks in the game, you hear Daphne talking but you see Velma's lips moving. (00:01:00)
Continuity mistake: In the scene just after Joe finds his parents, when they are sitting in their trailer talking, his parents have a stuffed clown between them. Just before Joe asks them if there ever was a time when they'd be staring at the moon, the clown is slumped forward with its face not visible. In the next shot, when his mom starts her sales pitch about having clowns for sale, the clown is now standing upright between them.
Continuity mistake: When the members of the brotherhood beat up Mani until he is dead, they pick him up above their heads. The tattoo on his torso appears to be on his right side, whereas in previous and following scenes the tattoo is on his left side. That shot is flipped.
Factual error: During the custody hearing, the Maryland flag in the courtroom is upside down. The rule for a Maryland flag is "black and gold, top of the pole," this flag has the red symbol at the top.
Continuity mistake: In the scene where Thora Birch's character goes to a café with her psychologist, the psychologist takes a bite of a cake and puts it back on the table. In the next scene, the cake has not been touched.
Factual error: The movie is supposed to take place over the course of a single summer. In one section of the film, Bobby is reading a story about VP Nixon's recent Presidential nomination, which took place in 1960. Later, he is reading a story of Maury Wills base stealing record, which occurred in 1962. (00:25:00)
Other mistake: When Prot visits the doctor's house, he thanks the wife and the camera is zoomed into his sunglasses. The reflection of his glasses shows the doctor looking at him, but the doctor is standing behind him. (00:53:40)
Visible crew/equipment: When Donnie and his Dad are in the car, talking, prior to nearly hitting Grandma Death, in the window behind Donnie's Dad is the reflection of a vehicle which says "Darko" clearly on it. There's also the reflection of a clapperboard on the backseat. (00:21:00)
Continuity mistake: When the panel of doctors are being queried by Aames, for the second time of the loop of this interview, the black box containing the mask can clearly be seen in the bottom right hand corner on the desk when the camera swings to the main doctor. When the camera pans back again, it is gone, and it is only after this that the assistant brings in the box.
Visible crew/equipment: Several times throughout the movie you can see lighting screens and lighting equipment in the reflection of the troopers sunglasses.
Continuity mistake: When Jack Nicholson is driving his truck through the field in a rush to get to the church to save the little girl, you see the truck bouncing through the bumps. In some scenes, the truck has crash bars in the front, then they disappear, and reappear again.
Revealing mistake: When Rita pulls the first stack of hundreds out of her purse, she puts it down next to her. The bill on top is very close to looking real, but the bill underneath is very fake looking. (00:44:15)
Continuity mistake: After the "car chase" the white car gets put in the barn. When the black car arrives it is covered in mud (so much they have to wipe it off the windscreen) from the dirt track. The white car only has a few specks of dirt.
Continuity mistake: The first time we see the young doctor doing his "lobotomy" in London Hospital (to the girl that was married to Prince Edward), Ian Holm comments on the procedure for some guest as they stand behind a glass window. You can clearly see the young doctor doing the third strike with his hammer in a reflection in the window. The movie cuts back to the young doctor and he is doing the third strike for a second time.
Continuity mistake: Gordon mentions that his wife accidentally spilled hot water on his leg and burnt it, but the actor only occasionally limps on it, although we are shown that he has an injured leg. This is mentioned on the commentary.
Continuity mistake: When TJ jumps in the dumpster at the school to hide from the guys in suits, he sees two guys and another who's dressed up like Principal Prickly in his normal shabby suit, but then a second later when he takes off his Prickly mask he's in a black suit.
Continuity mistake: When the police secure the scene where Scotty was found a TV reporter makes a statement. She's standing in front of a tree with a big horizontal branch. When the camera angle changes the tree behind her is different with a much lower branch. (00:10:25)
Continuity mistake: When Grace and Ms. Mills are sitting in the living room you can see a clock on the right, but in the next shot it's disappeared.
Continuity mistake: In the red drawing room, Freddie Nesbitt can be seen behind his wife, Mabel, putting his coffee cup on a bureau. They cut away to a wider shot, and he is holding the cup again.