Revealing mistake: When the mall Santa lands in the Bundys' back yard, everybody looks toward the back, and when Al looks forward, he cracks a smile although he's upset about the matter. Ed O'Neil admitted he couldn't contain his laughter.
Revealing mistake: In almost every episode where Michelle is a toddler, you can always see her look to the right or left to most likely a person telling her what to do.
Revealing mistake: In "Stop That World, Series 3, when Barry gets thrown of the See-Saw by the globe, and Barry lands in Paul's arms. The first shot is of a dummy and quickly switches to the second shot of Barry. It is obvious they used a dummy to make it look like Barry was falling into Paul's arm before switching them quickly.