+4
1920s: 1) The General, 2) Sherlock Jr. (I'm afraid I haven't seen enough silents)
1930s: 1) King Kong, 2) Alexandr Nevskiy (those were the only ones that really grabbed me. Again, I haven't seen enough)
1940s: 1) Rope (ditto)
1950s: 1) H-8..., 2) War of the Worlds, 3) North by Northwest, 4) Forbidden Planet, 5) Ikiru
1960s: 1) An Event, 2) The Good, The Bad, and The Ugly, 3) Dr. Strangelove, 4) Liberty Valance, 5) Viy
1970s: 1) Siberiade, 2) uhh... I'll get back to you on this (I should leave Fritz out because it's more of a guilty pleasure)
1980s: 1) Conan the Barbarian, 2) Excalibur, 3) Brazil, 4) Das Boot, 5) Come and See, 6) Heavy Metal (yes, it's worth the exception. I wish adult animation stuck to that direction.)
1990s: 1) The Taste of Cherry, 2)Fight Club, 3)The Truman Show, 4) Gattaca, 5) idk
2000s: 1) Apocalypto, 2) War, 3) The Return, 4) A Wonderful Night in Split, 5) Fantastic Mr. Fox
2010s: 1) Whiplash, 2) The World's End, 3) those were the only two that really stuck with me, barring Pain and Gain which is again, more of a guilty pleasure.
2020s: maybe Everything Everywhere All At Once, but even that's a stretch.