This video has been getting a lot of attention; it has 739 Diggs and counting.

The company is known as MasterFit in the US and MetalFit in Japan. However, the only website we can find for the company is the Japanese site. (Google translation)

Treehugger saw the system a couple years back:

"The components of the house are actually numbered, and are constructed as you would a piece of kit furniture. Materials cost 10-20% more than those for conventional framing, but the cost is offset by reduced labor expense..."

The "no tools" approach is similar to the kitHAUS system, except with wood members. Both systems enable relatively unskilled laborers to frame an entire home.