I have seen it couple times and like it too. Watched it again week ago since i have to write two movie reviews for one Japanese culture class im taking. Too bad im not so good writer...
The soundtrack on the movie is great too btw. I havent listened much Thee michelle gun elephant otherwise but the soundtrack by them really fits to this movie. And beside The last waltz in Oldboy, Aoi haru's ending song Drop is one of the most memorable ending songs in any movie. They almost always give me the chills.