While many people turn to GoPro cameras to film their extreme sporting, Justin Olsen wanted more. His customized solution was a vest that securely holds a DSLR at chest level. Not only is this a better vantage point when shooting while riding a bike, but it also allows him to capture high quality stills and video. I still think he is pretty gutsy however, as I would be afraid of falling while riding and wrecking the camera.
My current typical set up is a 15mm fisheye on either a Canon 1d Mark III or a 5d Mark II depending on the situation (higher frame rate vs. a wider field of view, respectively). There is also a Pocket Wizard attached to the camera so I can trigger the shutter remotely. – Justin Olsen