Dual screen laptop patent (pending) for auction on eBay
Now, I don't know if this eBay auction is a hoax or not, but I reckon the idea of a laptop with a double sided monitor is actually quite a good one....make the top side a touch screen and you've got a tablet and a regular style laptop all in one.
Around ten years ago there was a laptop (IBM? Toshiba?) where you could remove the screen, take off the back cover on the screen and put it on an overhead projector. Quite similar, isnt it?