I’m a big fan of the anime (not seen the series yet…), but the live action trailer looks very very nice!
Anime details:
The story is set in the American Yokota Air Base located in post-WWII Japan, a few months before the beginning of the Vietnam War. Its main protagonist is a girl named Saya, who hunts hematophagous bat-like creatures called chiropterans for a secret organization known as the Red Shield.
Live Action incarnation:
In May 2006, Bill Kong, producer of Crouching Tiger, Hidden Dragon and Hero, announced that he was producing a live-action film adaptation of Blood: The Last Vampire, directed by Ronny Yu, and, like the source anime film, primarily filmed in English rather than Japanese. The film’s setting, however, will be shifted to 1948 at a United States Army camp in Tokyo, shortly after the conclusion of World War II during the American occupation of Japan.
(Details from Wikipedia)

Popularity: 2% [?]
Batman: Arkham Asylum Review
Transformers: Revenge of the Fallen Review
[Prototype] Review
The Dishwasher: Dead Samurai Review
Coraline Review