[quote name='shieryda']Is this movie based on 1 graphic novel, or is it a series?[/QUOTE]
It's one graphic novel, originally published as a dozen or so single issues, not unlike From Hell and the Watchmen. You can pick it up for twenty bones, and it's worth every penny. I think From Hell may be better objectively, but V for Vendetta is probably my personal favorite of Moore's work. It's absolutely scathing.
I was pretty skeptical about the movie, what with it being helmed by a first-time director and all, but a trustworthy friend scored an advanced screening and was surprised at how not-crap it was, so I've reconsidered.
Besides -- Alan Moore distances himself from everything he's ever done at some point. Should I not read Miracle Man either?
Oh, and anyone else notice how they pushed the movie back from Guy Fawe's Day to St. Patty's Day? Good stuff.