Nice idea! Looking forward to playing it.

Mattias Fagerlund made something vaguely similar about throwing a ball like a couple years ago - doesn't work anymore due to the infamous OpenGL version bug:
http://www.hypeskeptic.com/mattias/BallGame/
It had no real gameplay, but it was surprisingly addictive... I guess that deep down, we all like throwing stuff and making things fall down. :roll: