Yeah, Gaiman did do an AMAZE-ZA-ZING 3-part with Cooper! It's called The Last Temptation and was written as a companion/promo for Cooper's album of the same name. The art is all black-and-white inks by Michael Zulli--my fave comic artist--and are breathtaking. You can get it in a spiffy hardcover (and I think paperback) from Dark Horse--for some reason Marvel's not printing it anymore.
The Dark Tower is worth checking out if you're not into horror--it's a sci-fi/fantasy/western/lots of other genres series and is King at the top of his game. The sequence ties in to tons of his other works, like 'Salem's Lot, The Eyes of the Dragon (another fantasy, not horror, book from King) and The Stand (which is now being serialized by Marvel--they're into the second story arc).
I adore Miller and 300. I liked the movie, too. I haven't seen Sin City yet (yeah, it was a movie too), and I can't wait to finally see it!
Personally, I'm just not a superhero fan. I like "anti-heroes," like the Sandman, Vampire Hunter D...you get the picture.
Ooh! And I love the Flight series of short stories. They're gorgeous!

