At the end of the film, when Eddie and Mark are talking about bands, they discuss Henry Rollins. Eddie incorrectly credits Henry Rollins as the lead singer for The Misfits. Rollins was the lead for Black Flag. Glen Danzig was the lead for the Misfits.
When "Warren" comes into the record store to shoplift, he had nothing in his pockets since he is leaving them empty for shoplifting space. Yet in the back room after being caught he has a Game Boy. This is because of a deleted scene in which Lucas borrowed Joe's Game Boy.
When Deb is making her buttons on the balcony of the store, the first one she is shown making is "dishonesty". Upon throwing it into the pile of other buttons, you see the button "stupid". The very next button she makes is that same "stupid" button.
When Corey is on the roof talking to AJ after the Rex Manning incident, her hair is in her shirt. Then the camera angle switches and it is out of her shirt. Then the camera angle switches again and it is back IN her shirt.
In the car, Gina takes hold of the Rex Manning record with her left hand, reaching over her right arm which is on the wheel. In the next shot she holds the record in her right hand, and her left is on the wheel.
When Lucas is in the casino at the craps table, after winning the first roll, he picks up the dice and then goes into his "save the empire" speech. After stating he would buy the table a drink if he wins again, the table attendant pushes the dice over to him.
During the scene where Mark is watching Gwar on TV and imagines himself in the video, the song playing is labeled as "Saddam A Go Go" and when the scene switches to fill the screen the title is incorrectly changed to "Sadam A Go Go".
When Lucas walks up to the craps table the stick man says, "Craps, end of roll, new roller," but a 3 was the last roll. The shooter's turn would only end if he/she had rolled a 7 after the point was established. A shooter's turn would never end on a rolled 3.