Visible crew/equipment: If you look really, really, really close in the background as the killer throws Cici off the balcony, you can see someone sitting in a tree, wearing black, with a camera.

Revealing: Just before the cop gets impaled through the head by the pole, you can see that it is obviously a dummy. (Easier to view in slow motion)

Other: The book Gale Weathers wrote seems to know lots about the conversation Casey (Drew) had with the killer in the first scene of Scream. But seeing as both Casey and the killer died in the film, how could Gale have known so much about the conversation Stacey had on the phone?

Revealing: In the opening sequence when Omar Epp's character gets a nasty knife wound to the head. Watch carefully and you can see the retractable blade popping back out when he pulls his head away. It is very quick though!

Continuity: When Sidney and her friend get into the police car to be taken to protection, Sidney sits on the driver's side. When the car crashes, she is on the passenger side.

Factual error: If the glass in the cop car is weak enough for the killer to smash it without hurting his hand, shouldn't it be weak enough to break when he throws the cop against another window hard enough to draw blood?

Continuity: When the Sheriff writes "Cici Cooper" on the chalkboard, between the closeup and wideshot of him writing, the handwriting and location of his writing dramatically changes, and the words "Maureen Evans" and "Phil Stevens" above, also change too.

Continuity: When Cici is stabbed in the sorority house, her shirt is bloody, but there is not a hole. I doubt that the killer took the time to spare the clothes while murdering her.

Audio problem: When Dewey is being stabbed up against the soundproof glass, you see a shot of Gail shouting "No." You can see a reflection of the killer in the glass standing motionless, but you can hear Dewey being stabbed.

Continuity: When Gale kisses Dewey she has no more lipstick on her mouth, then in the next shot she has lipstick on.

Revealing: When the killer attacks Sid's bodyguards, the younger one has blood on his throat before the killer slashes it.

Other: When the killer is stabbing Randy, you can see his reflection in the side mirrors. He stabs him many times. The same amount of blood is on the knife every time he lifts it up.

Continuity: In the beginning of the movie when Sidney first walks out of the dorm building we see a red sticker on the door by where she puts her hand, but in the next shot from the door outside, if you look closly the red sticker is not there. In fact it is an entirely different door.

Revealing: When Mickey is flying through the air after getting shot at the end of the movie, if you look closely you can see it's a stunt double.

Continuity: When Sydney is rehearsing her play she pulls the red shawl around her shoulders twice in different shots.

Continuity: In the opening scene - the premiere of Stab - when the girl is about to go back into the theater, you see the door into the theater. In the next clip, when she enters - the door is much wider.

Revealing: When Mickey draws the gun at the end of the movie, a hammer is heard being pulled back. Yet the gun that Mickey is using is hammerless.

Continuity: When Cici is thrown from the balcony there is debris from the window all around her (glass & window pane fragments), but if you watch when she is thrown through the window in the first place, it is only a bit of debris went that far away, not nearly as much as it is shown around her.

Revealing: Towards the beginning, when Gail Weathers is talking to the sheriff who is standing at a podium, you see Mickey filming her with a hand-held camera. A panning shot going right following Mickey with some friends walking sideways reveals him looking at the camera twice. This is because he was waiting for his cue to stop.

Other: It is highly unlikely that the murderer knew Omar Epps' character was going to put his ear to the stall when he heard music. It is even more unlikely that the murderer is going to get Omar Epps' character on the first stab. But it makes for good cinema.