Daybreaker. The whole movie is awesome but the main reason it is awesome is
As Moviebob said "it is the Anti-twilight"
think about it, Sparkly vampires that barely drink blood and go from suicidal to happy in a flash vs Vampires that aren't sparkly, drink as much blood as they can get, and Actually follows true vampire mythology (EX: These vampires die when they are in the light)