1960--the one with the Morlocks sporting Paul Williams hairstyles.
I thought they kind of resembled Cousin Itt in that.
Aha but Paul Williams wore sunglasses like a Morlock would.
"Learn from me, if not by my precepts, at least by my example, how dangerous is the acquirement of knowledge and how much happier that man is who believes his native town to be the world, than he who aspires to become greater than his nature will allow." Frankenstein