Continuity mistake: When Darren tells the guys that he is getting married, the beer in front of him has no foam at the top of the bottle. When the camera angle changes to where it is facing Darren, he moves the beer a little. It now has a lot of foam at the top of the bottle. (00:25:35)
Continuity mistake: In the jailbreak scene when the coach backs into Wayne and J.D's cell, you hear the back up alarm on Wayne's truck (J.D. & Wayne even mention it). Every other time the truck backs up there is no back up alarm, it is silent. (01:17:30)