Another site for the books. I completed this one a couple months ago. It's notable due to the way all pages use AJAX to avoid page reloads. The adding to cart feature uses the great Ubercart ajax cart module from erikseifert to keep with the whole AJAX fun-ness. Getting page specific js and css files to load on demand was fun -- but in the end it works well. Huge thanks to all the Ubercart devs and community -- for without you guys this would not have been possible.
Let me know your thoughts.