Bewitched (1964)

Serena's Richcraft - S8-E17

Revealing mistake: Darrin casts a shadow revealing painted sky background when he goes out to pay cab. Later, when he goes out to get in helicopter the neighborhood is not the neighborhood we normally see outside the Stevens' house. There's an Amoco gas station across the street.

George Washington Zapped Here (2) - S8-E22

Revealing mistake: When Samantha is showing Martha the washing machine, look at Martha's shadow; it's visible on the "trees" outside the window in the door, making it obvious it is a painted backdrop. (00:05:35)

Jeff Swanson

Samantha is Earthbound - S8-E16

Revealing mistake: When Samantha, Darrin and Dr. Bombay are in the living room and walk as a group towards the television, you can see the crease in the carpet where the floor is going to collapse.

Samantha is Earthbound - S8-E16

Revealing mistake: When Samantha is in the tree at the party, you can see the reflection of the branch against the "sky" revealing blue painted sky.

Samantha's Witchcraft Blows a Fuse - S8-E25

Revealing mistake: When Darrin brings the ladder around to the front of the house, it's obvious this is not the actual house but a stage set; the background is obviously a painting and the driveway/garage have disappeared. Further the outside and windows are too narrow to be the actual house. The den is larger than the small facade in the scene.

Samantha's Witchcraft Blows a Fuse - S8-E25

Revealing mistake: When the officers pull away, the shadow of the car is visible on the painted backdrop of trees. This isn't the neighborhood of Morning Glory Circle with the Kravitz House across the street. The shadow reveals it's a stage backdrop. Further, this is basically the same as Allergic to the Macedonian DoDo Bird from Season 3, with the same DoDo Bird costume.