Still don't have my computer back, but I got enough time on another system for a quick post.
I finally went out and got a copy of this special edition magazine about Urasawa:

I'll be posting more as soon as I get my computer back and I post the final part of my Quick Japan interview translation, but there's some Urasawa's rough work in that mag that I coulnd't resist sharing... NOW.
Check out this work from 20th Century Boys!
More to come when my computer comes back.
(Or if I get a little time on another system again!)