Stalker (1979)*
If you enjoy watching 3 dirty, grimey guys walking around dirty, grimey places, talking philosophy intermittently for two hours and forty minutes, then this is the flick for you. Is it sci-fi? Is it an allegory? You won't know and you won't care you'll just want something, ANYTHING to happen and it never does. Maybe that's "art" and I just don't get it.