I think up to this point, it's been difficult to suggest a world where Batman and Superman and Wonder Woman and others could exist in the same universe. That was one of the things I really wanted to try and get at. Not to mention, the amazing opportunity to bring those characters and have those characters tell an important story, their own story, within the confines of a film.

One of the things I think is important about 'Watchmen' is that it have resonance within cinematic pop culture as well as superhero culture.

I mean, it's weird because people lately have been coming up to me and going, 'Oh, my God. '300' is huge.' I'm like, 'Really? It's not done yet!

The truth is the music is really an incredible personal part of the movie. When I was drawing the storyboards for Watchmen, I had just gone to my iPod and was grabbing music. It took me about two weeks to really put my playlist together. But once I had it, I kinda just put my headsets on and drew for five months. But that music's the music that's in the movie.

You can't have a Superman that is battling cultural morality. You need a Superman that has built in sort of values.

I always say, I'm certain I changed 'Watchmen' less than the Coen brothers changed 'No Country for Old Men.' I'm certain of it. But you don't hear the Cormac McCarthy fans, like, up in arms about it. They should be. It's like an amazing Pulitzer Prize-winning book.

When I make a live-action movie, it's a very physical process. It's like running a marathon.