Underworld- a great trilogy if you like vampires and werewolves. Awesome weapons, and a great female heroine. You won't know which side to root for the vampires, werewolves, or neither.
Kate Beckinsale is Locked and Loaded in New "Underworld Awakening" Poster. Opens January 2012 I love her in this movie!
Underworld Trilogy (Underworld / Underworld: Evolution / Underworld: Rise of the Lycans) [Blu-ray]