When Paul and Howard are sitting in the hospital cafeteria, the food items on the table keep changing between shots.
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.
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.
In the climactic sequence at Griffith Park, a girl has a cigarette balanced between her ear and her head. The cigarette appears and disappears repeatedly during the sequence, depending on the individual camera angles.