A guy in England was riding his bike with a helmet cam on, when he got hit by a CAR. And he got nailed so hard, his bike flew through the air and the front wheel came off. But somehow he landed on his FEET.
Luckily he escaped with just bumps and bruises. (Search for "Romford Cycle Crash." It happens at :21. WARNING: F-bomb!)
(There's also helmet cam video from a guy on a motorcycle who came INCHES from hitting some idiot on a bike, who tried to cross a road without looking.)