Take a look at the Underworld: Rise of the Lycans trailer and see if you were as surprised, but delighted,  as I was to see Michael Sheen playing Lucian, so wild and a such a Spartan-esque body.  We are used to seeing him as Tony Blair, mild manner, in a dark blue suit.  Lucian is the whole other side of the specturm for Sheen.  Rhona Mitra seems to hold her own with Sheen as the main focus of the vampires.  The versatile Bill Nighy plays her father.