I built this over the summer, and figured I should post pictures of it.
The tubes are bamboo and the joints are carbon fiber. All the other components are standard bike parts. The ride quality is pretty incredible. The combination of the bamboo frame and carbon fiber fork absorb bumps and vibrations unbelievably well- it's practically like riding on glass, but the frame is still plenty stiff and moderately light.
I have a **** ton more pictures and a writeup of the process here if anyone's interested:
http://build-its.blogspot.com/2010/0...ike-frame.html