There's so many...predominantly featuring Alan Moore and Frank Miller...but to name a few:

League of Extraordinary Gentlemen
The Sandman [edit: duely noted...I cheated on this one  ^__^]
Constantine
Sin City
300

Current Titles...

The Walking Dead The Walking Dead series follows our main protaganist Officer Rick Grimes waking up from a coma only to fall into a chaotic nightmare filled with zombies. From seeking out his family and fighting for survival to working to uncover the mystery of how the zombies cambe about, the Walking Dead is an ongoing series that offers all you would ever want from a zombie epic.

Bleach

Tite Kubo's Bleach follows with the teenage Ichigo Kurosaki through his evolution from schoolboy to Shinigamai (Death God). Gaining the abilities of a Death God, gives him the tools to fending off evil spirits. But with these new powers comes responsibilities that will force Ichigo to adapt, evolve and ultimately grow up.