Last week my paper (the Seattle Post Intelligencer) ran an article
about biking and then they had an on line forum to discuss it.
Two different posters threatened to door bicyclists, and a third said he likes to stand where bikes go by so he can push them into the street.
they might have been just blowing off steam, but they are THAT nasty and angry and full of road rage.

When i catch up to someone, I try to smile and be polite. (I'm small and not
intimidating, so i'm sure that helps)
but then i tell them (as fast as i can because i'm afraid they'll zoom off)
what they did wrong.