At the end of our Week of Code, Chris and I put together the RSS feed and directions you need to turn the built-in Mac OS X screensaver into a LibraryThing Screen Saver.
To do it you’ll need to grab the following URL: http://www.librarything.com/labs-screensaver.php?userid=timspalding and change “timspalding” to your user name (public users only, of course). Then watch the video.
Update: Does anyone know of an easy way to make a Windows one?