Continuity mistake: When Fred goes crazy for Judy the objects in the background change places.
Continuity mistake: When Kevin is talking to Fred at the beginning of the movie, his cap changes angle throughout the whole scene. (00:12:10 - 00:13:45)
Continuity mistake: When Fred and Bertha are getting ready for the fake party, in one shot you can see that VCR is zoomed right in on them, but when Bertha is dressed and dances like a rap star it is now zoomed back. They could not have zoomed it out because they would have had to take the flashlight and the tape out and then put it in again.
