 If you liked
Shaman King
|
 ...then you might like
D.Gray-man
|
It's still got the whole ghosts/demons thing going on. I don't know; I find them both similar and enjoyable.
Like Naruto, Bleach, Dragon Ball and others, it's the adventure of a crowd of heroes who want to save the world from the evil guys. Each one with his own personality and powers.