Killer Klowns from Outer Space

The scene in which a car is thrown over a cliff was initially intended to be far more spectacular - the car was to fly over the cliff and crash down to the ground. Unfortunately, the sling rope snapped because effects crew members neglected to remove the stoppers from underneath the car's wheels. The result was what is seen in the final film, the car slowly tumbles over the edge and becomes caught on a tree.

When the farmer goes in his house to get supplies, the prop master is visible inside the doorway as he exits.

Film was released in 1988, but the ending credits claim copyright 1987

In the TV version before the puppet show the guy throws his popcorn bag over his head which is then tossed back at him. This is the reason he heads up to the puppet show.

Edited into DrScreams: This is Why Killer Klowns from Outer Space 2 Hasn't Happened (2023)