Thing that kills me the most that I see every day? People who bike with their iPods on. Especially when they're wearing those huge, noise-cancelling headphones... just seems really, really stupid to me.
I bike with my iPod on. That being said, I look carefully before I cross a street and stick primarily to sidewalks. The one time I was hit by a car while riding my bike, my iPod was off. The car was speeding up the berm to make an illegal right turn and nailed me (ouch) :scowl:. That being said, no serious damage, and the driver was nice enough to give me and my bike a ride home.