Imagine a ballpoint pen that can take what you've drawn on paper and transfer it to the computer without the need for a scanner (or any other kind of imaging):
http://www.wacom.com/Products/Inkling
The site is currently being hammered but from what little I've read the big difference between this and say LiveScribe is that you can use any old paper you want, all you do is clip a special receiver to your paper and voil?! Your drawing is transferred to the computer.
Obviously I'm interested in how accurate it is, but this could be a very handy gadget (especially for those of us who are visual learners)