Have I mentioned helmetography on these pages yet?
Helmetography is what Aixe Djelal in Portland, OR calls her accidental photography as she rides around with her helmet-mounted Contour camera. The camera is programmed to shoot a photo every five seconds. She selects the best and posts them to her blog, Bicycle Head.
Her photos are generally much better than mine. I use a GoPro Hero2, which also has a five second intervalometer function. The above was shot last night during my commute on the Guadalupe River Trail in San Jose, California.