
A company called FRONT is combining motion capturing software with rapid prototyping equipment to create interesting and unusual furniture. The designers sketch in air (that has to be a hard mental exercise in and of itself) and the cameras track the point of a special marker.
They then run it through some 3d rendering software and input it directly to a laser hardened rapid prototyping machine constructs the furniture.
One step closer to desktop manufacturing I guess. I can see stores in the future asking you to draw what you want and they neaten it up and produce it.