I have never understood all the love for V for Vendetta either. I love Natalie Portman but I found getting through this movie a real chore.
Personally, I'm a fan. I liked the movie more than the graphic novel, which is rare for me (and which is sheer blasphemy for some), but I liked it as a modernized update of the source material to address and provide commentary on the post-9/11 world.
Apologies to Alan Moore who wrote it in 1988.