This flash game is based on the awesome Japan Break Industries (Nihon Break Kougyou) video: http://www.youtube.com/watch?v=9fCiBSMhnMc
Instructions:
1) Start pressing the space bar when the first gauge hits the last triangle (adjust the timing depending on your system, flash seems to introduce a noticeable delay on mine).
2) Release the space bar when the second gauge points straight towards the red triangle.
3) Mash the B and N keys to charge the power bar while the dude lifts the ball.
4) If your throw falls short, your dude will be tired when the ball rolls back; mash B and N to make him stand up in time to catch the ball again.
At the beginning of each level, you get to choose which ball to use; a heavier ball has larger damage potential, but is more likely to fall short of the target if you don't make a good throw.
There are three opponents: house, bridge and building. Destroy them all for the sake of world peace!