When Doug says he's registered at the Jerky Hut, Carrie frowns. It then cuts to a longer shot and she is smiling.
When Doug and Carrie angrily leave the Palmer apartment, they leave the door open. Deacon and Kelly promptly go to tell the kids without ever closing the apartment door.
Deacon and Kelly are riding in their car without the proper motor vehicle stickers on the windshield.
When Doug is telling Deacon about how much riboflavin is in his cereal, the boom mic is briefly visible near the top center of the screen.