I found this article interesting so I thought I would pass it on. I am not sure why anyone would have a use for it but It is a good read nonetheless...
http://www.engadget.com/2006/10/10/how-to-create-a-screensaver-for-your-ipod/
http://www.engadget.com/2006/10/10/how-to-create-a-screensaver-for-your-ipod/