If you're interested in the subgenre called dark fantasy, I highly recommend 'The Broken Empire' trilogy by Mark Lawrence. It is as dark as ink. Based in a medieval dystopia gripped by the undead, the story follows Jorg, an evil bastard, as he rips through the world leaving destruction and misery in his wake. It really is as beautifully written as it is horrific. For those of you who enjoy reading the point of view of a twisted protagonist.