i have a Th!nk city electric car.  It has a charger in the trunk that is an 
avcon with what i think is a nema 14-50 plug.  What kind of places have such 
plugs that I might be able to borrow in sf bay area?

In answering your question I am making two assumptions: (1) that you are 
seeking Bay Area locations to plug in your EV and (2) that you have a 
conductive (as opposed to inductive) plug in your car. 

The Clean Car Maps website has a map tool which allows the user to locate the 
nearest EV station (both conductive and inductive) by utilizing an integrated 
version of MapQuest. They are located on the web at:
http://www.cleancarmaps.com/

Outside of getting driving directions, this site also provides a list of 
Northern California Conductive EV refueling sites at:
http://66.77.93.87/maps/FMPro?-db=maps.fp3&-format=search_results5.htm&-
lay=electric&-sortfield=county&-sortfield=city&-op=eq&method=conductive&-
op=eq&area=northern&-max=30&-find

HondaEV.org also has a listing of Bay Area Conductive EV refueling sites at:
http://www.hondaev.org/chgba.html

Additional Websites that may interest you: 
Silicon Valley Chapter of the Electric Auto Association (has links, news, 
reviews):
http://www.becketts.ws/eaa/evinfo.htm#links

Th!nk Mobility by Ford website:
http://www.thinkmobility.com/homeUS.asp?TID=489681

Search Terms used: 
NEMA 14-50 outlets
th!nk electric vehicle
bay area ev outlets

Thank you, I have a place to look now