American History X (1998)

Visible crew/equipment: When Derek is running into the bathroom after Danny has been shot, as he is running through the crowd of students, it cuts to a shot from the side of the hallway, it's very quick, but you can see a camera, a cameraman, and the boom mike and its operator.

Other mistake: Derek sees the Cadillac circle the block after he walks Danny to school. He looks at the car and knows something is wrong. So he runs back to the school and in that short amount of time the crime scene is roped off and cops are everywhere.

Continuity mistake: When Derek lifts the till to throw it through the window it's wired glass, when he throws it through it's obviously clear. (00:46:00)

Audio problem: At Cameron's party, when Derek is about to leave and Seth comes at him with a gun you can see Danny running down the stairs screaming at Seth, but his mouth doesn't move.

Continuity mistake: In the dinner scene with the whole family and the mother's new date they are talking about the LA riots when Edward Norton puts down his fork. It cuts to a shot behind him and he's still holding the fork up.