Continuity: Gene Shepard throws a rock through his mistress's living room window while she's away on vacation. Yet when she comes back, the window is unbroken.
Continuity: When Paul and Howard are sitting in the hospital cafeteria, the food items on the table keep changing between shots.
Revealing mistakes: When Doreen hits Casey with her car it is obvious that she doesn't even come close to him (he's at least 10 feet away when he falls).
Continuity: When Honey and Gordon eye each other suspiciously after mixing up their photo envelopes, they try to find identifying information on each other. Gordon repeats the phone number he sees on Jerry Kaiser's car to remember it better, however the last 4 digits of number he is repeating differ from the actual phone number on Kaiser's car.