I have favorites:
One Piece (good action with a very very good plot)
Hunter x Hunter (it is falling off though)
Code Geass (one of the best plots)
Naruto (ask me why and it'll be very very hard to explain; I don't know the reason myself..)
Hellsing Ultimate (most gruesome)
Shinsekai yori (best plot)
Psycho Pass (second best plot)
