Apparently this Brian fellow from CES 911 is very very ballsy.  He performs scratch tests to see if his BlackBerry Storm screen will scratch!  This is a very big risk not knowing initially if it will.  This guy is nuts for what he uses to scratch the screen.  First he uses a utility knife, which is rigid and in my opinion would have the most success in scratching the screen.  Then he tries a receipt spike, and then keys which all are fairy tough, but not as sharp and hard as the knife.  The result, no scratches!  Watch for yourself. ( I posted the shorter video because it is more to the point).

via CrackBerry