The only one I could think of was Charlie Chaplin.

I've seen every feature film Chaplin directed except one (Countess From Hong Kong).

I love them all. The Kid, A Woman Of Paris, The Gold Rush, The Circus, City Lights, Modern Times, The Great Dictator, Monsieur Verdoux, Limelight, and A King In New York.

I think all of those films are excellent and essential. Some more than others perhaps, but there's not a single one I don't like.

And Chaplin would be the only director whose filmography I find so completely rewarding.

(F.W. Murnau would be the only other one I can think of who even comes close, but I still have a couple more of his (available) films to see).