Another vote from me for Eraserhead. That bleddy dripping, and I seem to remember a lift somewhere.
Talking of strange unsettling "entertainment", may I recommend Scotland's Ivor Cuttler and Phyllis King currently being repeated on Radio 4 Extra comedy nights, roughly at 11 to 12pm.
Comedy it ain't, and I'm still not sure what it is. Poetry ? possibly, he was known as a poet, but it's as enigmatic as any French art house rustling reeds, but with that unmistakable Northern climes fateful darkness and mundanity. I'm the only one that finds it a little compelling in my household. Check it out if you like strange. The iplayer will have last night's episode available. Even more weird because he's already long dead.