Other mistake: In the second scene where the Powerpuff Girls are on TV, Campbell Scott puts in a tape that has an old Disney sticker on the side. However, when the movie begins the Powerpuff Girls played, which is not Disney.
Visible crew/equipment: The mistake can be seen during the montage where the whole family is sick. Campbell Scott is attending to his sick wife, Hope Davis. He comes to the bedside to bring her a drink. As he leans down to sit on the bed and the camera follows him, a boom microphone can be seen edging into the top of the screen on the right side. It is quickly pulled back. This was witnessed during a DVD viewing.