Hellsing (ヘルシング Herushingu?) Gonzo produced a thirteen episode anime series that uses the same characters and settings, but a different story from its source manga. Written by Chiaki J. Konaka and directed by Umanosuke Iida, the series premiered on Fuji Television on December 27, 2003 and ran until its conclusion on February 16, 2004.
(Source - Wiki)
Plot Summary: Hellsing follows the antiheroic vampire, Alucard, and a police girl-turned-vampire, Seras Victoria, two vampires employed by the vampire-extermination group of England, the Hellsing Organization. Slowly but surely, through their active duty, they find a new breed of vampires beginning to arise.
Genres: action, drama, horror, supernatural
Themes: giant weapons, gore, military, police, vampires, zombies
Age Rating: Mature
(Source - ANN)
Hahah I love Hellsing, its the best anime in my oppinion!
Alucard > Vash