1920:

The Cabinet of Dr. Caligari (Robert Wiene)
The Golem (Carl Boese, Paul Wegener)
Way Down East (D.W. Griffiths)

1925:

Battleship Potemkin (Sergei Eisenstein)
The Gold Rush (Charles Chaplin)
Strike (Sergei Eisenstein)

1921:

The Kid (Charles Chaplin)
Orphans of The Storm (D.W. Griffiths)
Destiny (Fritz Lang)

1926:

Faust (F.W. Murnau)
The Lodger (Alfred Hitchcock)
Mother (Vsevolod Pudovkin)

1922:

Nosferatu (F.W. Murnau)
Haxan (Benjamin Chritensen)
Nanook of The North (Robert Flaherty)

1927:

Sunrise: A Song of Two Humans (F.W. Murnau)
Metropolis (Fritz Lang)
The General (Buster Keaton, Clyde Bruckman)

1923:

Safety Last! (Fred C. Newmeyer, Sam Taylor)
Our Hospilaity (Buster Keaton, John Blystone)
Souls For Sale (Rupert Hughes)

1928:

The Passion of Joan of Arc (Carl Theodore Dreyer)
The Cameraman (Buster Keaton, Edward Sedgwick)
The Docks of New York (Josef von Sternberg)

1924:

Greed (Erich von Stroheim)
The Last Laugh (F.W. Murnau)
Sherlock Jr. (Buster Keaton)

1929:

The Man With A Movie Camera (Dziga Vertov)
The Cocoanuts (Robert Florey, Joseph Santley)
Pandora's Box (Georg Wilhelm Pabst)