I personally enjoyed walking across the Golden Gate Bridge. It gives a different view of SF. Unfortunately, I do not go up to the city as often as I like so I do not have too many recommendations. I suggest checking you SF Weekly's website http://www.sfweekly.com/ for activities and food recommendations.

My personal recommendations:

Dim Sum in Chinatown: Lichee Garde http://www.licheegarden.citysearch.com/

The food is the best I've had in Chinatown and in the South Bay and the price is relatively inexpensive.

Prime Rib: House of Pime Rib http://www.houseofprimerib.citysearch.com/

Highly recommend from my friends who live in the city. Reservations are recommended.

Italian: Stinking Rose http://thestinkingrose.com/

If you like lots of garlic in your Italian Food, which I do. Go here.

Sincerely, Nancy in San Jose