Keeble & Shuchat in Palo Alto. --- Very Highly recommended for everything photographic!

Camera West in Walnut Creek - high end used gear with prices to match, nice folks.

"Kamera Korner" in downtown San Jose -- I've not been there in a few years but used to be worth the trip. reasonable prices. Lots of stuff. They used to have "junk bins" that one could pick through. Some repairs done on site.