Motocross superstar Travis Pastrana and his rowdy friends Kenny Bartram, Greg Powell, Nate Adams, Ronnie Renner, Cam McQueen and Jesse Olson call themselves the Nitro Circus, a high-octane name that's dead-on accurate. In the first of several releases, these crazy "carnies" round up some of their coolest tricks ever to be caught on camera, including jumps, flips and other outrageous two-wheel action.