Out of San Francisco, Critical Manners:

Critical Manners: a revolutionary act of courtesy. Come put the nice back in the bike world with critical manners! A helmet-wearing, bell-ringing, blinkie-sportin’ good time for you and all your bike friends. Practice synchronized signaling, single file riding, stopping at stop signs and NOT blowing red lights. Critical Manners will brake for pedestrians, trolleys, and even the occasional SUV. If you’ve ridden in Critical Mass, you know about the “testosterone brigade”. Maybe it’s time you rode with Critical Manners. We take obedience of the law ridiculously seriously.

They only have eight members at the moment. It’ll be interesting to see whether and how it grows and whether they pop up in other cities.