Do I have to say anything more to explain my Tablet PC game idea?

For those who haven't been in an arcade for the past few years, "Dance Dance Revolution" is one of the greatest games of all time. You have to move your feet in synchrony with directional arrows on the screen. Simple to describe, doesn't look hard, is hard.

At the Game Developer's Conference, Sony was demoing what I'm sure they're not going to call "Flail Flail Revolution," in which you point a Webcam at yourself and must move your hands into the air in synchrony to screen sectors flashing on your computer.

So my idea is that you must match pen strokes flashed on your screen, building up a line drawing over time. It ain't art, but DDR ain't dancin' either.