Hard Boiled by Frank Miller and Geof Darrow
For more graphic novels on the edge, try these:
Ed the Happy Clown by Chester Brown for a surreal and hilarious tale of vampires, pygmy hunters, parallel dimensions, and one very pitiful clown.
Palestine by Joe Sacco for comics journalism at its best, covering two months in the occupied West Bank and Gaza.
100% by Paul Pope for a masterclass in the fluid beauty of ink and brush.
Shaolin Burning by Ant Sang for a thoroughly modern take on the traditional kung fu saga.