Visible crew/equipment: When the families are eating dinner, Ramona says that John Belushi tried to pork her. When she says that line a boom mic appears in shot, above her head. Also, when Vic is talking about where he got the food, the boom pole is visible at the top right of the screen.
Visible crew/equipment: When Vic and Ramona are driving away after Earl gives them his car, the reflection of a studio light is visible in the car's left rear window. (01:22:30)
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. (00:52:10 - 00:57:25)
Other mistake: After Earl and Vic tangle in the swamp, Earl staggers back to his house to discreetly use the basement shower, where he is shocked to find Vic already there and waiting for him, hiding in the dark behind the shower curtain. Both men are literally covered from head to toe in thick, muddy muck from the swamp. but there is no trace of mud (handprints, smears, etc) on the shower curtain nor in the clean, white shower; and, when Earl manages to chase Vic out of the basement, he leans heavily on the door for a moment after slamming it, which should have left a huge, muddy print on the door's clean, white surface. But, as Earl steps away, there is no muddy print on the door at all. (00:38:57 - 00:39:42)