Ragnar Lothbrok by Travis Fimmel. He is Oh! My! God!! The way he goes from being so sexy to absolutely menacing in a second! And how he seems to be mocking everything around him, all the time with an inside joke / scheme in his head! ... "If I was him I'd worry less about the Gods, and more about the fury of a patient man. And as well you know, I can be very patient."