Just stumbled on this site, and thought I'd share my happiness and pure luck of having SD as my home town - Stone, Alexmith, Alpine, Pizza Port, Green Flash, etc. are always available and often on on tap at choice places (Liars' Club). Ballast Point is right down the street from me, and their Sculpin Ale is wonderful.
Just took a trip to Marin County and enjoyed several varieties of my favorites from the north: Bear Republic, Lagunitas (horay, Maximus) and Anderson Valley (brought home a bottle of Brother David's Triple!). I think Sierra Nevada is the best mass-distributed beer.
This is the best time to be a beer drinker!