The Face Builder
This is your friend, use your fingers to make him look happy (or scary) !
More About This Demo From The Author
This is a multitouch interface prototype where you can manipulate elements in a natural way.
Move the eyes, nose and mouth to make the face look the way you want.
This demo is best viewed on multitouch-enabled browsers, but you can simulate multiple fingers by pressing any key while mouse-dragging the elements.
On iOS, you can add it to your homescreen, and it should work offline.
Get the Source Code
This demo is released under the GPL license.