Continuity mistake: In the fight scene at the party, Jake gets hit over the head with a bottle and he has blood on the top of his head. It changes constantly throughout the fight. It disappears totally when the fight is over. He has no blood anywhere on his body.
Factual error: Several characters can be seen playing an Xbox game console, which was not released until 2001, although this movie is set in 1999.
Continuity mistake: When the girl goes home and knocks on her mother's bedroom door, mom's hair is all over the front of her face. When the shot changes, it's tucked back behind her ears (never moved her hands). When she turns to slam the door, it's in front of her face again like the first shot.
Factual error: Throughout the film, whenever officers from the Los Angeles Police Department are depicted they are wearing a fake police patch. This is obviously incorrect because officers with the Los Angeles Police Department do not wear patches.
Factual error: When Frankie Ballenbacher arrives at Johnny's house when he wants to go to Fiesta, he is wearing some brown and white Nike Air Force I's that were not released until 2004. The movie is supposed to take place in 1999.