Check out this app for the iPhone and iPod Touch.  Called ‘Bike or Die‘, it’s $6.99 in the iTunes App Store (this link will open iTunes).  The video shows the action, which is a little unrealistic, but looks pretty fun.  The buttons and controls, as well as the rider and bike, are totally customizable…you can drag the controls to where you want them on the screen.
The game is also available for the Palm OS, and you can download a free trial for that system on their website.  The Palm version has more than 2,000 downloadable, user submitted levels and maps.
