It's not the movie entirely that makes me enjoy it so much. It's the little things, the scenery, a moment here or there, but mostly it's because of Ken Watanabe and his portrayal of Katsumoto. I find the character attractive as hell, and not just because of his looks either (which are very pleasing if you must know). I enjoy the way he speaks and holds himself, the way he watches the other characters and acts without 'reacting' to the events around him.
Okay, that's enough sleepy rambling..back to the movie. :D