I am lucky to live in a small town with an old-style movie theater. It is somewhat renovated and tonight I saw "V for Vendetta". I recommend this movie. It is good, unfortunately not great. A Sunday night in a small town theater meant that I had a quiet mostly empty theater without obnoxious people in the audience. It also means that the theater starts on schedule with just a couple trailers and then the movie. This is the way a movie should be, without all the noise and obnoxiousness of the modern cineplex. A small town also means I can walk there from home, despite the cold night.
I think it is a reasonable re-interpretation of Alan Moore's original novel, but I suspect that he would not agree. Many of the details are changed, characters revised, and most of the psychological content is different. But enough remains to say that the movie held true to the original, at least as true as a movie can be to a novel. There is enough the same that I found nothing surprising. The novel is a complete spoiler but the movie survives. In much of it I found myself thinking, "Yes, they had to make that change because of the movie context." The plot and characters are true enough that I found nothing especially jarring in the changes.
This is similar to the changes made to "LA Confidential" between movie and book. But in that case, the author was pleased with the result despite an amazingly drastic revision to plot and characters. It was amazing in that although almost nothing remained of the original book, everything felt true to the world of the book.
I will not attempt a detailed review of the movie. Ignore all the reviews that are obviously politicized. There are and will be many who are biased for or against the movie for political reasons. The rest are probably going to be accurate. This is a good movie. The acting is acceptable, if not great. The characters, their character development, the plot, the actions, are all well integrated into a coherent movie. That alone is enough enough to rank a movie as at least average. This one has a few ideas (not too many) which moves it up to good, but it lacks the excellence to achieve greatness.
Get the graphic novel and read it. I read it many years ago when it was first published. It made more of an impression then than it will now. After the movie there will be less surprise. But the depth of psychological understanding of the characters is in the novel, not the movie.