Here, thanks to friend Corey, is a video of just-returned-to-action-after-breaking-his-tibia Valentino Rossi riding his Yamaha MotoGP bike, the two-wheeled equivalent to a Formula One car.
The camera keeps the horizon level so you can experience the lean angles of Rossi's bike. I'd never seen anything even close to this for gasp-effect. I'll bet you haven't either. Watch as they set up the equipment and then hold your breath for the ride!