Manos: The Hands of Fate (1966) [so bad it's good]

Produced by Harold P. Warren a fertilizer (and insurance) salesman who made the film as a result of a bet with screenwriter Stirling Silliphant. Acting? ho-hum. Storyline? So bad it appeared on both Mystery Science Theater 3000 and RiffTrax. Music? Lousy. And yet, it forces laughter from viewers because it's endlessly bizarre. You can watch it on Tubi. Or check the commentary from MSTK or Rifftrax.