I saw a vampire movie on the other day that reminded me of the world of Blade only this movie was done a heck of a lot better - It starred Sam Neil (the most underrated and one of the greatest actors living today) and Ethan Hawke - The whole world population have been turned into vampires and they are running out of blood, they either need a cure for Vampirism or a workable synthetic blood for consumption - it was really good in my opinion - can't remember the name.