I was having this internal debate about what makes a good bad guy. After much thought (to much maybe) I am casting my vote for the Kurgen from The Highlander. Seriously evil, menacing and an all around bad ass. There is my choice, lets see who everyone else comes up with.
soraleia:
Hans Landa from Inglorious Basterds. Christoph Waltz is such a superb actor who happens to be a great villain in most any role, in my opinion.