I didn't realize so many people liked V for Vendetta. For some reason I was thinking everyone hated it. I did like when I watched it back when it first came out on DVD. I remember absolutely nothing about it though, so I might have to rent it from Netflix some time soon.
Do yourself a favor and read the comic instead.
The same goes for pretty much any Alan Moore adaptation. The League of Extraordinary Gentlemen is especially terrible. (but the comic is really good)