Continuity mistake: When Madison is speeding away in her Shelby Cobra with the Angels hanging on, she crashes into a theatre. While in the theatre, there are shots of the car in the background. It is a completely different car than the Shelby that Madison was driving a few minutes before. The racing stripes are thicker, the wheels are different and the car is actually a lot bigger.
Continuity mistake: When Demi Moore shoots the Angels off the side of the observatory, the bullet intended for Drew Barrymore hits her in the lower abdomen. Later in the movie when the Angels wake up on the lawn below the observatory, the only bullet hole in Drew's shirt is on her upper left chest.
Continuity mistake: When Natalie is talking to the surfer by his car, Alex and Dylan are under the car looking through his belongings. After he gets into the car to drive off, it cuts to Natalie and she says something, cuts back to the surfer pulling away in his car and then cuts to a shot of Dylan but you can see the surfer's leg/towel in the shot. Shouldn't he already be in the car?
Continuity mistake: This is during the fight between the Angels and O'Grady's thugs. Seamus has Dylan against a container. He aims to punch Dylan but misses and hits the container to the right of her face instead. There's white writing on the container. Cut to the next shot and the writing is now to the left of Dylan's face.
Continuity mistake: At the end of the Angels' last fight with Demi Moore, we get a closeup of Demi's mouth. It is bloody and her teeth are covered in red. A few seconds later, after she falls backward through the floor and begins to scream, there is no blood on her face and her teeth are pearly white.