Neil Gaiman's critically acclaimed The Sandman is original, sophisticated and artistically impressive. Unlike most other Graphic Novels, it exists outside the superhero genre and beautifully combines elements of mythology, world history, mystery and fantasy. And each issue features amazingly surrealistic covers by Dave McKean. If you can lay your hands on The Sandman, go get it!
On an unrelated note, lightsensitive updated with three new pics.