Lists by bobbybrwn

a list of 64 titles
a list of 260 titles
a list of 159 titles
This list is from widely spread post in the Russian segment of the Internet attributed to S.A. Filippov, a lecturer in Film History at the Lomonosov Moscow State University (the largest and oldest university in Russia), Faculty of Journalism, and also a film critic and a VGIK graduate (the biggest Russian film school).

Some items have more than one film listed, I marked them as "substitute".

These directors are stated as the most significant, author of the list recommends all their films for watching: Michelangelo Antonioni, Ingmar Bergman, Robert Bresson, Luis Buñuel, D.W. Griffith, Akira Kurosawa, Fritz Lang, Roberto Rossellini, Andrey Tarkovskiy, Lars von Trier, Orson Welles, Federico Fellini, Sergei M. Eisenstein.

Sources (some of the most prominent):