Sorry if this is old news and I missed it, but Ride of Silence date for 07 is May 16.

http://www.rideofsilence.com/main.php

I wrote both of my local bike clubs last year asking about a ride, and neither answered. I think this is a nice (i.e. non confrontational Critical Mass-type thing) to educate people about cyclists. I'm hoping there will be a ride here. If not, I might drive the hour or so to Walla Walla and join theirs.