Häxan [aka] Witchcraft through the Ages
Un Chien Andalou
The Thief of Bagdad (1940) (though the 1924 film isn't too shabby, either)
All that Money Can Buy [aka] The Devil and Daniel Webster
I Married a Witch
Beauty and the Beast (1946)
The Devil's Eye
The Exterminating Angel
Woman in the Dunes
Quatermass and the Pit [aka] Five Million Years to Earth
Eternal Sunshine of the Spotless Mind
--So...a nebulous category, and at least as arguable a list as any so far...I expect I might see questions about, say, (These Are) The Damned or The Company of Wolves...or Paperhouse or A Matter of Life and Death...or, of course, Monty Python and the Holy Grail or The Fisher King...I'm feeling the lack of The Testament of Orpheus and several Bergmans.
And this list does include two remakes that improve on their originals, though perhaps more people would argue with me about La jetée (1962), source of 12 Monkeys (and a "deconstructive" version of the original released a couple of years ago), than would about the silent Thief.