Hi Karl,
Welcome.
There is a strong Uni presents in the BAy area. There is a group in the East Bay and also in the Santa Cruz area.
Every year there is a SF Uniride that you might want to be aware of. http://www.unicyclist.com/forums/showthread.php?t=62968&highlight=San+Francisco
Here are some other related threads. One is to Corbin’s ride list and the other to the pix link for the most recent SF Uni Ride.
http://www.unicyclist.com/forums/showthread.php?t=36850&highlight=Bay+Area+coker
http://www.unicyclist.com/forums/showthread.php?t=53202&highlight=Bay+Area+coker
I grew up in Palo Alto and Los Altos, so I have a fondness for the Bay Area.
Cheers.