first the Kagamine Videos
Servant of Evil (this one is soooo sad to me...DX) by Len

Daughter of Evil(this one freaks me out O.o)

now for my fav. Kaito's version
Prince of Darkness (or "Lord of Darkness")

Meiko's version
Princess of Vengeance

and now Miku Hatsune
Princess of Green

maybe i need to remake a new work about my new obsession with youtube....