Pencil + ink with a little Photoshop. I've been having some scanner trouble lately, but I ordered a new one so it should be easier for me to post artwork soon.
It's nice to see that even when you use a more minimalist approach to details in the overall picture than much of your work, you still come up with something that's just all kinds of swanky like this.
Love the slimmer look to this one, very nice.