Roger Ebert recently picked Buster Keaton's The General as the best silent movie ever made. City Lights notwithstanding, I agree.
As for why it shows up here in 1926, despite its 1927 American release, it premiered overseas in '26, and with Fritz Lang's Metropolis on the horizon, that's good enough for me.
Picture: The General (prod. Buster Keaton and Joseph M. Schenck)
Actor: Charley Chase (Mighty Like A Moose) and Harry Langdon (The Strong Man) (tie)
Actress: Greta Garbo (Flesh And The Devil)
Director: Buster Keaton and Clyde Bruckman (The General)
Supporting Actor: Sam De Grasse (The Black Pirate)
Supporting Actress: Phyllis Haver (What Price Glory)
Screenplay: Buster Keaton and Clyde Bruckman (screenplay); Al Boasberg and Charles Henry Smith (adaptation) (The General)
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