So far I got:
- Solaris
- Ikari XB-1
- Come & See
Also:
- Viy
- The Sacrifice
- Satana (1991)
Plus a bunch of the ones mentioned in the comments now.
Man with a Movie Camera is my favorite silent film. A day in the life of a socialist city. Filmed in Odessa, among other places, and with badass cinematography. If you’re expecting to be bored by a silent film, don’t - it’s bouncy, and jaunty, and wonderful.
Sergei Eisenstein’s Battleship Potemkin and October are both worth seeing. October drags a bit but all communists ought to enjoy it. Potemkin is justifiably iconic. I didn’t enjoy his later films as much (including Ivan the Terrible), but some folk dig them.
The Cranes are Flying is a beautiful tearjerker about a woman whose fiance goes to fight in World War II. The same director also did I Am Cuba, an anthology portrait of Cuba after the Revolution.
Sergei Bondarchuk’s War and Peace is suitably epic. He also directed a Napoleon film from another perspective, Waterloo, which I believe is in the public domain, so you can watch it on YouTube, and in English, too.
The Color of Pomegranates is stunningly gorgeous. It’s one of my all-time favorite films, but it’s more of a poem or a painting come to life, so only watch if you’re in that kind of mood.
I think Soy Cuba still holds up. Gotta approach it with a bit more attention span than common, contemporaneous cinema tho.
It has dialectics with film language, an increasingly radical set of characters, high-tech (for the time) IR film shots and some incredible long shots that still baffle the mind.
Kalatosov’s Letter Never Sent has a few of those badass tracking shots, too, and turns them to 11 during a Siberian forest fire. Stunning stuff.
Battleship Potemkin, arguably the best silent film of all time.
Outside of kinda sad war movies, 12 chairs is funny (but book is also great) . Moscow does not believe in tears have not been mentioned, I think a lot of people like it