Well, Cowboy Bebop, because I think being a bounty hunter in space rocks ( except for the times when everyone goes hungry on the Bebop ), DBZ because you get to be absurdly invincible beings who can blow up planets and obliterate the universe, YuYu Hakusho because the afterlife is very funny in there, and One Piece so I can gobble up forbidden fruits and be filthy rich finding treasures.
Oh, and Hellsing, because there are lots of vampires in there. Vampiros son fant