Vampire Knight handles light and shadows very well, giving normal, everyday scenes a gothic feel. But the main thing I love is of course Zero Kiryu, the Draco Malfoy-esque character to offset the Harry-like Kaname. I love love love the interactions between Zero and his twin, Ichiru (voiced brilliantly by the same seiyu, Mamoru Miyano).
There's also a super-interesting almost-love triangle between Zero, Kaname, and Yuki Cross, our heroine. Why is it not a 10, then? The ending! [Mild spoiler:] Kind of deus ex machina and Yuki changes overnight into someone we don't really know, leaving us lost and really befuddled by her choices. I would have ended it much differently.
