This is the coolest idea I've come across for quite a while.
I'd love to do it but fear that the poster would be billboard-size. And, given that I'm an obsessive compulsive nerd, I'd probably try to put them in chronological order. Which would cause my brain to fry.
I have a Library Thing, but my collection here is a pale shadow of the mountain of books I left in Godzone. I'm seriously considering forking out the arm & kidney to get the lot shipped over here..