@matt in SF: Cantoo, Spicy Taste, Hai Ky Noodles
in Millbrae: Royal Feast, H&L Peninsula
in Fremont: Bing's Dumplings, Din Ding
in San Mateo, Milpitas and Fremont: Ox 9 Lanzhou Noodles
in Oakland: lots of places but i think Ming's Tasty is one of the best and cheapest dimsum you can get (way better than any of the 'take out' spots and as good as the fancy sit down places but cheaper)
really have to break it down by cuisine (i'm writing a post)