Watchmen: Tales of the Black Freighter
Possibly just as good as the movie. I'm not entirely sure how Zak Snyder could effectively blend Tales of the Black Freighter into the actual Watchmen movie, but he'll probably find a way.
I am very stupid for purchasing it now. Not because it's terrible. In fact, it's awesome. But I'll probably end up going for the Watchmen/Black Freighter double-dip when it eventually comes out.