i found this and it looked pretty interesting. although primarily iphone related, the see thru macbook looks pretty cool:
http://www.trustedreviews.com/apple/news/2008/03/18/Apple-Patents-iPhone-Clamshell-iTablet-Designs/p1
http://www.trustedreviews.com/apple/news/2008/03/18/Apple-Patents-iPhone-Clamshell-iTablet-Designs/p1