I have to say; when I was a kid (in Alberta, not California), the general advice was not to pick and eat mushrooms without significant knowledge. I don't really see the allure either, common table mushrooms are very tasty and plentiful. I think this is just one of the Darwin award's new qualifying categories.
My favourite hot-and-sour soup is filled with a variety of funguses (well 2 or 3). Though these are not "found" mushrooms, they are different from the "common table mushrooms" that I believe you're talking about.
edit: This is the one that I bought at the farmer's market: http://www.specialtyproduce.com/produce/Abalone_Mushrooms_32...