Phantasm (1979)

Revealing mistake: You can see the stick making the finger move when it's in the box. (00:38:20)

Reggie: This guy's not gonna leak all over my ice cream, is he?

Trivia: Despite looking quite fancy and expensive, the interior of the mausoleum was actually a fairly cheap set made primarily of plywood and marble-textured contact paper.

TedStixon