In the episode of Simpson's, season 10, in the episode when Bart takes 'Focus-in' to stop his bad behavior.

In Bart's room, when the rest of the Family find the coat-hangers hanging from the ceiling, and Bart wrapped in tin-foil with a bin-lid on his head.

When they walk in, he tells them to shut the door, an obvious door-shut sound is heard. However, the next time the camera views Bart's bedroom door, it is clearly open. The door doesn't actually close during the entire event.