This is pretty cool – touch and pen, working together.
It kind of combines gestures with two modes of touch interaction (the finger and the pen). So its pointing/holding with the finger, and fine work with the pen (which is a proxy for any tool).
If you can combine all this and figure out how to add “typing” (for some definition of typing) then it might be very very nice. Perhaps voice recognition with this interface would work very well. But in terms of object/image manipulation it’s pretty cool.
Some more details in the article here.