Just wanted to give some Bay Area members heads up about a relatively new camera store in the city, Mike's, that's located next to the Safeway on Market and Church. I went in for the first time last week just to check it out and was suprised to find they have a decent selection of m4/3, in comparison to some of the other stores in the city.
Mike's had many of the newer Oly bodies and slightly less Panny bodies. They had a GH3 in stock and out on display, I got some hands on time with it. Their lens selection isn't that deep but the saleman indicated that they had more on the way. They don't buy or sell used equipment, but they do carry a small amount of darkroom supplies.