WiiSpray
I love to see projects that marry technology and art to open up whole new worlds for creativity.
This is a pretty cool project using Nintendo Wii controls and Flash to produce virtual graffiti. You can select paints, control spray and even use stencils to spray through. The templates look like they are controlled using a handheld representation of a stencil card that responds to movement and rotation ala Microsoft's Surface.
More info and video at wiispray.com.
