All it takes is a camera you know by feel, a good, controlled suspension, and a healthy dollop of utter stupidity.
I keep the camera in my front left pocket. When I can't resist the urge to capture a scene, I unzip, pull out the camera, feel for the lens to tell me where on the 'on' switch is, and then just point it in the general direction of the road or whatever needs photographing, and hope for the best. I can do all that without taking my eyes off the road. I do glance down occasionally to make sure I'm in Auto, Landscape, or Vibration Control modes and not portrait, but that's about it. In the photobucket site, there's a quasi-decent self portrait I accidentally took while turning it around to get the lens pointed away from my palm.
I've joked a few times about taking a $5000 picture, and that certainly is possible, but this feels really easy and safe. Not significantly more hazardous than switching from odometer display to time. And I'm not terribly fond of the camera, so if I did have to get my hand back on the bar post haste, I'd just pitch the camera and come back for the card after the hazard was dealt with.
One of these days I probably will get something hard mounted. But I've gotten some shots I really like by holding it over my shoulder, or pointing it at the mirror, or just straight off to the left or right. So I'll have to put the camera on a servo-controlled mount, and wire up a joystick I can manipulate with my lip.
