Jim Henson is best known as creator of The Muppets. But he was also a bit of a hippy, and on the road to mainstream success he had quite a reputation for surrealistic / avante garde film. Below are three fine examples of his lesser known experimental work.
Time Piece (1969) 8 mins
Ripples (1967) 1 min
Limbo – The Organised Mind (live on The Johnny Carson Show 1974) 4 mins
TV was so much trippier back then.