I agree with some of the other comments, Bleach does get darker (and AWESOME) later on in the series. I do have to admit that I stopped watching once I hit the first series of filler episodes though, since all the awesome characters stopped appearing. I'm sure they come back though.

The same with Full Metal Alchemist, actually. (I don't remember if I was watching the old or new series though.) I had a nightmare because of one of the episodes I saw; a scientist starts experimenting to create a chimera, around the same time his wife disappears. That's all I'm going to say.

Are you going to go see the live-action Avatar? It's going to be so insanely horrible, but I have to go see it anyway.