One of the all-time great cheap lunches. Unfortunately, because it's the Bay Area, there has been a rise in yuppified, $9 banh mi out here. Admittedly, they're usually pretty good, just unecessary. Luckily, there are still plenty of good spots for the real, and cheaper, deal.
The combination of baguette, sauce, and a little smear of pate.... Just fantastic! The roast/bbq pork varieties are my favorites, but I also like the classic versions with all the weird cold cuts and head cheeses and things.