In no particular order:
Shane
The Searchers
Treasure of the Sierra Madre
White Heat
Inn of the Sixth Happiness
High Sierra
Night of the Hunter
Duck Soup
Arc of Triumph
The Train
Casablanca
Citizen Kane
Psycho
Frankenstein
The Big Sleep
Sahara
Brute Force
Adventures of Robin Hood
Elmer Gantry
Stalag 17