Continuity mistake: In the scene where Vince Vaughn is complaining to Harvey Keitel in Harvey's office about the hitman he hates his gold necklace is either tucked into his shirt and red tracksuit or hanging out. This alternates throughout shots but during the same conversation.
Continuity mistake: The white Mercedes has a sunroof in some shots, and not in others.
Continuity mistake: When X and Sweetness are having their skateoff, there is one seen where X grabs his right skate in his right hand and spins around. In the very next scene, his right hand is in the air.
Continuity mistake: In the room when DJay first plays his keyboard, the dirt pattern on the door behind him changes drastically when the scene changes.
Continuity mistake: During the concert when Johnny and June are singing Jackson, Johnny's guitar strap goes from a thick patterned strap to a thin leather strap. His outfit also changes from black to blue.
Continuity mistake: After Elvis's first live performance, his parents are discussing how proud they are. They and the crowd are still moving in time to his song even though he's already stopped, indicating the scene was originally intended to take place during the song.