When Carlton is speaking to Antonio as he is seated eating breakfast, Helen approaches with coffee. A background actor carrying a briefcase passes her from screen right to screen left. Seconds later, the same actor passes through the scene again exactly as before. It would have been impossible for him to come from the same direction twice without returning through the scene.
At the end of the episode when lowell is trying to figure out the movie name he is holding the bowl of cereal with both hands but in the next scene when it is a closeup on him he is holding it with one hand and in the next scene when it is far away he is holding it again with both hands.
Helens scarf keeps changing locations.
When Lowell is going to attempt to use the wiring in Antonio's cab so they can roll down the windows and get out, Alex recommends hooking up the heater instead. Since the car wouldn't start, running the heater would be pointless since it would only blow cold air.