Although I expect to see a lot of political pundits hand-wringing about how this movie "endorses terrorism," I don't think the argument has merit. In both the comic book and the movie, V is genuinely heroic but he is also monstrous and insane.
Warning Spoiler! Click to showHe could easily have achieved his ends without torturing the one human being that he really cares about (Evey). Such an act can only be described as monstrous and insane, and it establishes that V is only slightly less evil than the government he seeks to depose.
PS: I'm a little miffed that so many reviewers spoiled the torture segment by revealing that it is V -- not the government -- that tortures Evey.
One gets the sense that he is not as concerned with freeing the people of England from tyranny as he is with his own lust for vengeance. Indeed, all his claptrap about freedom and tyranny is probably little more than a rationalization for his bloodlust.
The story doesn't offer any easy answers to complex questions, which is precisely what I like about it. Although I'm happy that they left V morally ambiguous, I'm not entirely happy about the removal of some of the humanizing elements of the antagonists (gov't officials).
Oh, and Hugo Weaving's performance was amazing even with the restriction of that mask.
((Edit: spelling correction))