Continuity mistake: When Belushi and Ackroyd are sitting at the table having coffee, Earl throws his coffee at Ackroyd but if you play it in slow motion, you can see Ackroyd duck the coffee before Belushi actually throws it.

Add time

Continuity mistake: When Earl is invited into the house by Vic, it is still dark outside, probably wee hours of the morning. After what seems like only a few minutes inside the house, Earl leaves and it is light outside.