In about a month my wife and I will be taking a very quick weekend trip to SFO, and I'm looking for advice on things to do and see and places to eat. I lived there for a couple of months during an internship in the summer of 2004 and loved it, but I'm sure there are plenty of you guys who live there or have spent a lot more time exploring the city than I have. I've done a lot of the basic touristy things like Alcatraz, Fisherman's Wharf, the Golden Gate Bridge, Golden Gate Park, etc, but I'm sure I'll repeat one or two of those depending on what my wife wants to do. The plan is no rental car with all public transportation via BART or buses. We're good with long walks in the city too. We haven't picked a place to stay yet, but we may use a free night certificate from Marriott for the first night out by the airport (unless we can figure out another use for it before it expires in November), but for Saturday night we'll most likely priceline a hotel near Union Square or Fisherman's Wharf depending on our plans for the weekend. What are your favorite things to see/do and places to eat in the city?