I have read and seen many Mangas and animes that I probably have to say these are my favorites

Claymore

Hellsing

Bleach

xxxHolic

Tsubasa

Cowboy Bebop

Shadows of Spawn (Yes there is a Spawn Manga it lasted there volumes. If you are interested it on the vine just type it in)

Negima

Naruto (I just like the manga. I really hate how they stretched out the show to that many episodes)

Shadow Lady (Probably one you all have never heard of)

One Piece (Great Series)

Ghost In The Shell