Fantastic!

Rating: 9/10 (12 September 2001)

This is an amazing adaptation of the graphic novel by Alan Moore. They managed to keep the story pretty much intact, as well as the style and pacing of the book. I was repeatedly amazed at how much of the book got into the movie, which I was expecting to be similar in name and subject matter only.
There is one major difference between novel and the movie: in the novel, you know exactly who Jack is pretty much from the start, as well as the reasons he has for the murders. In the movie they flip it around to make it more of a mystery (and this is an appropriate change for a movie version).
The crux of this change is that if you've not read the graphic novel, DON'T -- not until you've seen the movie. It gives away too much, and will reduce your enjoyment of the movie.
(in case you're wondering, I saw it at the Toronto International Film Festival's Gala Premiere, which is why I've seen it and you haven't! :-) )