A cool video by Chris Milk, the American music video director.

Using materials such as tea and sugar Dorota Mytych (born in Poland) recreates photographs sculpturally in order to video them. Her images appear on screen slowly, particle by particle and stay quietly with the viewer. Once the image has coalesced, the process is reversed and the image breaks piece-by-piece leaving nothing but an empty white screen.

Your microphone is your pen, vioce is the ink.
Ze Frank made a little flash drawing tool. You don’t need a mouse but a microphone if you want to draw. A low volume tone will make the line curve counterclockwise, a medium will let it run straight and a high volume will turn the line to the right… Somehow he manged to draw this arty face and figure. You can try it out for yourself here.