Beer Happy Hour

SF Bay Area Happy Hours? (free appetizers/drink specials)?
I was wondering if anyone knows of great Happy Hour places in the SF Bay Area? I saw one spot on a local TV show- “il pescatore” at Jack London Square in Oakland. For the price of a beer, we were able to sample the goods at their happy hour buffet (meatballs in marinara, small salami baguette sanwiches, various olives, cheese cubes, salsas, and get this- homemade potato chips! A great deal, IMO. Happy hours there run from 4-6pm M-F.
So- what other great happy hour places can you tell me about?
vals in daly city
The Happy Hour Guys at Flying Dog Brewing!