Surrealism (I mean going back to the 20's)
Of course there's Bunuel & Dali's Un chien Andalou, but what about Man-Ray, the Seashell & the Clergyman, Antonin Artaud? What are your top 5? I certainly put Entracte up there, and then, though it goes into the 1940's, Meshes of an Afternoon.
I did a discussion on surrealism in movies on this podcast: https://soundcloud.com/wagesofcinema/surrealism/
iTunes podcast: https://itunes.apple.com/us/podcast/the-wages-of-cinema/id977881387?mt=2/