8x5 - Mystery Science Theater 3000

The SOL is pulled into orbit over a strange planet of the Observers. The Observers insist on observing the crew watch "The Thing That Couldn't Die" (1958) where the decapitated head of a dead Spaniard curses a household of farmers and leads to senseless deaths. On the SOL, an Observer appears, but Mike and the bots are annoyed to the point that they throw him off the ship.