Black Butler is one of my favorites, too. :) I also like Chrono Crusade, Bleach, Hakuouki Shinsengumi Kitan, Yu Yu Hakusho, G Gundam, Getbackers, Descendents of Darkness, Wolf's Rain, and who doesn't love going down memory lane with Sailor Moon?
Oh, and anything Miyazaki!
Godchild is my favorite manga. Some serious epic shizz right there.