Protestant Christians and those interested in history will appreciate this bold yet successful attempt to tell the story of Martin Luther, the father of the Reformation, in just two hours. Luther, a simple German monk, started out by searching personal spiritual answers. The search led to reading the Bible (not something available to many in those days), and reading the Bible opened his eyes to corruption and questionable practices of the Catholic Church. Holy relics, indulgences - official papers that supposedly have the power to forgive a person's sins and save a soul from hell - Luther used to believe in them and buy them himself. But not anymore. With the Bible clearly stating that salvation comes from God, by grace and through faith, Luther can no longer support the official church. In fact, he can no longer remain silent.
While I agree with reviewers who say that Joseph Fiennes is too thin and good-looking to play Luther, I can't help liking him in this role. His Luther is convincing, passionate about the truth, and... human. He does not have all the answers; on the contrary, he is familiar with fear and doubts. We see his pain when what he started gets out of hand, resulting in riots and bloodshed. Joseph Fiennes may not look exactly like the historical Luther, but he portrays him very well. Another excellent performance I'd like to mention is that of Sir Peter Ustinov who plays Prince Frederick the Wise of Saxony. It is amazing how an actor of his caliber can take a relatively small role like this and turn it into a highlight of the whole movie.
All in all, this is a very good historical film, especially for those interested in Christianity, Luther, and Reformation.