I love it too! It really gets you going, doesn't it...I've been straightening my kitchen while I listen and I think I moved a little faster than normal!
Great stuff! My own favourite Western score is that for Shane: http://www.youtube.com/watch?v=iV84LgxBq0A&feature=related . That video has selections played by the New Zealand Symphony Orchestra. The mood is very different from that of the music you featured.
Thanks Fr. Sean. Shane is one of my favourites too. A really great film and score.