I don’t have a lot of background on the project, but WiiSpray.com–using a Nintendo Wii controller + Flash to enable collaborative graffiti painting–caught my eye:
The site is light on info, but you can see a few photos of the spray can controller. I particularly like the idea of controlling a stencil with one hand while spraying paint with the other.
Previously in a similar vein:
- Dr. Woohoo has combined WiiFlash + Papervision3d + Flash Panels + Photoshop CS4 Extended
- BLITZ Agency built a Flash Interactive Holographic Wall for Adobe MAX (details).