The new product from WACOM is the Inkling pen that captures your sketching as vectors for direct importing into the computer. Since it is actually a real pen you can do 'pen things' with it as well as sketch away for alter use in photoshop or illustrator with all the layers and such as well.
The portability and affordability of the solution looks very tempting - maybe much more approachable than a full WACOM tablet, a convertible notebook, iPad apps or the touchup after scanning. How nice is the sketchy look in their videos as well - nice work.
[Inkling promo images from the WACOM site]