The folks over at Foresight.org have a very cool video that shows the bottoms up fabrication of a laptop. They call the machine that builds it a Nano Factory. It a very impressive idea and fascinating to watch. I recommend downloading the file to disk and watching it as the file is 86 MB and I have not figured out how to stream it.

If you like this kind of idea, then I recommend The Diamond Age by Neal Stephenson's for a interesting look at the world where nanotechnology is widely used and misused.