Audio problem: The judge's mouth doesn't move when he says, "Must be an original piece" about Buffy's dramatic reading at the pageant.
Audio problem: When Brenda is in the movie theater, people are hurting her and yelling at her, but no one's mouth moves. (00:56:30)
Audio problem: In the scene in the teacher's classroom, when the teacher says "I'll see you after class". Two guys say "Sweet" and "Alright" and high five each other. However, their mouths don't move at all. (00:23:10)
Answer: That whole scene is a spoof of the show "Dawson's Creek". The guy is James Van Der Beek, who played Dawson Leery, the title character.
Grumpy Scot