Personally, I think Bleach has a truly awesome soundtrack. The music played during the action scenes and such is really great! My favourite OP song from Bleach is D-tecnolife by UVERworld - even now, I haven't gotten sick of it! As for my favourite ending theme, it's Life by YUI. I did eventually get sick of it, but I can't help myself from listening to it from time to time. Call it an obssession if you want lol.