Animes I thought were very good are as follows:
Claymore
Higurashi
Hunter x Hunter
Planet E.S.
Bleach (depends which arc we are talking about, beware of vampire arc, bleh

There might be some more, but I can't recall right now.
Also, I just realized that the football anime, Eyeshield 21, is finally done, and that is also one of my favorites, so I would recommend that too. It's only 145 episodes. No big deal.
