It would be really awesome if something liked this was done for the recommended reading lists on Amazon.com, although, not sure if Amazon has an easy API for that.
It's horizontal (like a bookshelf), instead of vertical, though.
Nice! I could definitely see a simply iOS app for something like that that makes use of the cover-flow animation. Could be a nice alternative to the Amazon.com store app if you can hook it up to user accounts and Amazon's personalized recommendations.