Your choice of Stalker from Tarkovsky intrigues me.  Personally I would have gone for Solaris, Andrei Rublev, The Mirror, Nostalghia, and Ivan's Childhood before that, but to each his own.  I must also add that you can lick a sack for your views on Bergman and Fellini.  Both of those men are responsible for some of the greatest films in movie history.  In direct retalliation I will counter your choices with a second opinion.
Dryer: Passion of Joan of Arc
Lang: M (Good choice)
Ozu: Tokyo Story
Godard: The Weekend
Bunuel: The Exterminating Angel
Mizoguchi: Ugetsu
Tarkovsky: Solaris
Vertov: The Man with the Movie Camera
De Sica: Bicycle Thief
Bresson: A Man Escaped
Renoir: Grand Illusion
Fassbinder: Marriage of Maria Braun
Eisenstein: Potemkin (Sorry for the boring choice)

As for your American choices. . . 

Welles: Citizen Kane
Laughton: The Night of the Hunter
Lubitsch: Heaven Can Wait
Romero: Dawn of the Dead
von Stroheim: Greed 
Murnau: Faust
Hawks: To Have and Have Not
Polonsky: Force of Evil

Theres a few you left out on both ends, but I won't be too difficult.

