Bebop does have a serious claim to the title, sure, and GitS:SAC was very good (but not quite broad enough in appeal to claim a generic "best" title), but Champloo? It wasn't bad, I guess, but it's not like there was much to be excited about in it either. It was a sort of amusing series, but I had to put in an effort to get through it at all.

FMA and Seed I couldn't even bother to start watching.