Story: Awseome story line. Extremly intense right from the beggining. Even most of the filler seasons are amazing, the only one I could've done without is the bount arc. Excluding that, everything is epic! Especilly sence the story isn't completly black and white. It has top quality battle scenes, too.
Animation: As far as animation goes, I think it's pretty good. The only thing I have an issue with is the size of some of the female characters boobs, it's just unrealistic. Otherwise, it's very well done.
Characters: I LOVE how developed all the characters are! Especilly sence there are over 80 of them. The heros and the villans are so well done that, unlike so much anime, you can really see where both sides are coming from and may even end up feeling sorry for and liking the villans. In fact, it's hard not to love some characters from both sides.
Soud: Bleach has a fantastic sound track and amazing voice acters. While at time the music is a little cheesy, it's also really good and always fits the situation. I also think all the characters voices, both in dubbed and subbed versions, fit them really well.
Overall: Bleach is a fantastic anime, and if you haven't seen it, you should really give it a shot. I can garuntee, if you like supernatural action anime, you will love Bleach!