With his evil looking beedy hawk eyes and his chemistry with Ian MacKellen, I actually was hoping he'd have been Saruman. I've seen him play a villain maybe twice, one in the Mel Gibson conspiracy theory movie, the other as Claudious in the 80s version of Hamlet. Both times he's been excellent.
If anybody ever makes a movie based on that comic book "Preacher", he definitely has my vote to become secret Vatican agent "Herr Starr".