Factual error: In "Our Son, The Man", Greg wants his own room. One night, while in bed, Mike and Carol discuss their options. Carol says "How about the attic?" Mike responds with "That would be fine if Greg were only three feet tall." Later they give Greg the den for a while. However, in "A Room At The Top", after cleaning out the attic, which was now full size, both Greg and Marcia want it for their own private room.

Visible crew/equipment: In the episode where Alice sprains her ankle, Sam comes over and gives Alice some flowers. He leaves, and Mike walks in and the camera zooms into Alice and you can see the boom mike shadow on Mike's face.

Revealing: When Eve Plum (Jan) is jumping on the trampoline you can hear that instead of saying "Go Jan." Greg instead says "Go Eve" The same thing happens when Peter is on the trampoline, instead of saying Peter someone shouts "Go Chris," an abbreviation of Christopher Knight, the actor's name.