Fupjack:
You've got to keep a few things in mind though, when an American says comics there's a 99% chance he means what we call American comics (which will sometimes have foreign writers or artists). And in America comics is also synonymous with superheroes for the large part as well, which is why the word graphical novel pops up more and more often. I also wonder how big the knowledge on European standards like Asterix, Tin Tin, Storm and the like is in the States(Suske & Wiske?).
Zanzibar:
Any good comics store will be able to get a hold of the books named in this article, I live in Holland and have no problem getting this stuff ordered in. They probably won't be lying on the shelves, though you may be surprised, Y the Last Man and Transmetropolitan were just lying around locally when I picked them up. Hey, now I think of it, it was a Swede who recommended Marvel 1602 to me (by Neil Gaiman; see coot's post), don't get this book if you haven't got a very solid background in the Marvel universe though, half the fun will pass you by.
Dectilon:
I can't wait for Black Summer to be finished and collected (I don't buy loose comic issues). It's a book by Warren Ellis about a super hero who deems the American President is a criminal due to his policies defying human rights and the amount of deaths that can be directly linked to him without justifiable cause. So he kills him. This naturally spins out into all manner of debate on heroes, their rights and dissidence among the heroes themselves who agree or disagree with his actions, madness abound. (The president getting killed is the book's opening.) Maybe you're as interested at looking into this as I am.
Sharp as a cork:
Most of the longer books have had their first issue released by the publisher on the internet for free so you can check out what you're getting into even if it isn't on the shelves, this is true for Transmetropolitan at least and I've seen a few others. Many publishers don't believe in this kind of thing though, so google around with titles that sparked your imagination.
Article:
Good to see this article broken up by author (as someone mentioned above). It really is the most telling factor in a book. I've been reading more and more American comics of late, I'm slowly building up a collection largely based around Warren Ellis, Alan Moore and Frank Miller and filled up with random assorted stuff. I was already planning on looking into Ex Machina, thanks for the confirmation there, though Y was really all I needed to search out more of Vaughn's stuff.
I'd love to read more stuff on comics. Maybe a rundown of European stuff? The Killer, XIII, SAS, Gilles, Siegfried, etc...?