I have a fairly long list of favorites that come to mind:

For A Fistful of Dollars
For a Few Dollars More
The Good, The Bad, and The Ugly
Dances With Wolves
Little Big Man
The Assassination of Jesse James by the Coward, Robert Ford
Cat Ballou
The Magnificent Seven
Red River
Butch Cassidy and the Sundance Kid
Hud
Hombre
The Big Country
Unforgiven
High Noon
The Alamo (the recent one)
Son of the Morning Star
Windwalker
The Long Riders
Wyatt Earp
McClintock
Hang 'em High




I usually don't care much for John Wayne movies...but I make an exception where "Red River" and "McClintock" are concerned.