I don't know if I just missed it when it first came out, or if it never appeared in the theaters, or what, but I recently saw a DVD movie called, "Luther," about the life of Martin Luther. I don't usually recommend movies, but this one was really great. It did not sugar-coat Luther and it's intent was not to slam Catholics. And it was very professionally done.
From what I know of Luther, it did a great job of presenting his life - "warts and all," to quote another famous German (Frederick the Great, I believe). After I saw it, I recommended that our fellowship group watch it. We did and everyone seemed to really like it, and one guy said he thought he'd recommend it to our new pastor. So anyway, rent the DVD. I think you will really enjoy it and learn quite a bit about both Luther and the Reformation.