[Nowhere Man]

These days I'm partial to DC, but I've got a pretty hefty list of picks from just about everybody. Definitely read them if you can find them.

DC:

All-Star Superman
Birthright
Superman for All Seasons
Whatever Happened to the Man of Tomorrow?
For the Man Who Has Everything
Lex Luthor: Man of Steel
For Tomorrow
Red Son
Batman: Year One
The Killing Joke
The Man Who Laughs
The Long Halloween
Hush
Wonder Woman: Gods and Mortals (and Gail Simone's current run)
The Flash: Born to Run
Green Lantern: Emerald Dawn
Emerald Twilight
Rebirth
Sinestro Corps
The Legend of Aquaman (laugh all you want, it's actually good)
JLA Year One (and all of Grant Morrison, Mark Waid, and Joe Kelly's runs)
Identity Crisis
The New Frontier
Kingdom Come

Marvel:

Spider-Man: The Death of Captain Stacy
Return of the Goblin
Kraven's Last Hunt
The Hunger
Ultimate Spider-Man: Legacy
Captain America (anything on Ed Brubaker's run)
X-Men: Days of the Future Past
Dark Phoenix Saga
Daredevil: The Man Without Fear
The Punisher: Welcome Back Frank
Marvel Zombies

Vertigo:

Watchmen
Sandman
Fables
Y the Last Man
Transmetropolitan
Preacher

Dark Horse:

Hellboy: The Right Hand of Doom
Conqueror Worm
Wake the Devil
Star Wars: Legacy
Aliens: Salvation
Usagi Yojimbo
Concrete

Image:

Invincible (my personal favorite comic at the moment)
Brit
CAPES
The Walking Dead

Other/Don't remember which company they're from:

Miracleman
Supreme: Story of the Year
The Rocketeer
The Lone Ranger (the new version from Top Cow)
Sonic the Hedgehog: Endgame (for a kid's book, this was pretty fucking dark)
The Tick: The Naked City