I just though of a couple more and both are zombie anime!
Highschool of the Dead - Loaded with sexy fan service and really great action scenes.
Kore wa Zombie desu ka? (Is This a Zombie?) - Funimation has licensed it and it is slated for release this year. It will be English dubbed.
Chobits (I already mentioned it in my first post but figured I'd throw it here as well to make the list more "complete").