Strike

Not Eisensteins most famous film, but it was his first and it's important in the history of cinema. The montage is brilliant and the inventive camerawork alone make it endlessly important. A routine story about workers striking put against the satire of the aristocracy, it seems most of the Russian silent films were like this, but the story isn't whats important in these films, it's the camera use. Eisenstein, Pudovkin, Kuleshov, these filmmakers are possibly the most important group of directors ever.