Hellsing Ultimate
ヘルシング アルティメット (original)
For over a century, the mysterious Hellsing Organization has been secretly protecting the British Empire from the undead. When Sir Integra Hellsing succeeded as the head of the organization, she also inherited the ultimate weapon against these supernatural enemies: Alucard, a rogue vampire possessing mysterious and frightening powers. Now, Hellsing must deal with a more dangerous threat than vampires.
Starring Jouji Nakata, Fumiko Orikasa, Yoshiko Sakakibara, Nobuo Tobita
Watch "Hellsing Ultimate" on Hulu Plus released in 2006. It's a animation and drama show, and has a rating of 8.2 out of 10 from Imdb which is very high for this kind of show.