I just downloaded the demo version of Delicious Library, a delightful OS X tool that catalogues your book, movie, music and game collections, links them up with Amazon.com resources and displays them in high-res quality on a virtual bookshelf. The interface works pretty much like iTunes.
Cool options? Rather than type in all your titles, you can use Apple's iSight webcam, or Delicious Library's own intelligent Bluetooth scanner to scan in bar codes. The catch is, the latter device can only be delivered to certain countries. Which means I will probably buy iSight when we move back into the house, which will be hopefully soon. Lots of unpacking and clearning to do.
Other cool factors include iPod Notes synchronisation, voice search (iSight might come in doubly handy then) and a drag-and-drop borrower's list using contacts in your Address Book. And it's just beautiful.
More information at the Delicious Monster website.