Gregory
International Sex Symbol
American Comics:
Sandman (completed)--a classic of the genre
Lucifer (completed)--nearly omnipotent sociopaths are sexy
Hellblazer (ongoing)--Constantine is basically a nicer Lucifer with less power to back him up.
Fables (ongoing?)--just generally good
And two miniseries: Sebastion O and Enigma
All of those are from DC's Vertigo imprint, which has turned out some garbage (Codename: Knockout? What the hell?), but is pretty damn conisistant, in my opinion.
In mainstream DC, there's ... I don't know, actually. Impulse and Superboy were awsome, but DC cancelled those titles, killed Superboy, and messed up Impulse. Batman's cool, but a lot of his comic arcs suck, so it's sort of a crap-shoot.
In Europe, there's Judge Dredd. Judge Dredd is awsome; it's a crying shame that so few of his books are available in the USA. I import them, but shipping fees are a harsh mistress.
Meanwhile, in Japan...
Samurai Deeper Kyo. I don't care how ludacrous it is, I love it. I love the protagonists. All of them. Usually, I really like one or two of the main characters in a manga, and tolerate the rest, but in SDK, they all kick ass. The whole series is great, absurd fun.
Detective Conan. I'm actually not thrilled by the gimick, but the mysteries are great, it's well-written... VIZ, an inferior publishing company, messed around with the characters' names, but I forgive them.
All of Junji Ito's stuff. Uzumakie, Tomie, his short stories. Well, not Gyo.
Off in ... Korea, maybe? ... Priest also kicks ass. The title character sold his soul for the power to fight evil; it's sort of Berserk-esque.
Everybody recommends Watchmen, but it has boring panel layouts. It probably seems like a minor complaint, but I think it drags the book down. Someday, I'll rally and finish the damn thing.