It's a long time I've watced a western movie several times, but I remember liking these a lot
The Good, the Bad and the Ugly
Oceans 11
Kung Pow - Enter the Fist (watched this too many times. I believe I'm tired of this movie. Even though it is HILARIOUS!)... But does this count as a western movie? xD
Amelie
I feel like writing "A Beautiful Mind", but I've only seen it once...