i watched one of the Nitro Circus's on a bus with a bunch of my MX buddies, i think it's sweet. Its not back to back MXing its got a bunch of fooling around and a good amount of DH footage along with other sports to.
Travis Pastrana pulled one out at Xgames this year for one run. He tried a backflip - barspin. The fork snapped when he took off from the lip of jump but he almost landed it, forkless. I think redbull was helping with the idea.