Just wanted to thank you all for the great ideas.
I didn't have as much freetime as I'd have hoped.
But you guys are right, SF is a pretty compact city and that made it fun for the time that I did have.
I ended up hitting Ghirardelli Square. Didn't hit that last time, and I needed to pick up some chocolate to share with the folks at work (kind of a tradition that you pick something up from a business trip to share with the folks who didn't go). Did the walking tour there and found out about some ships there. As I walked down the street a block or two, I realized I was in Fisherman's Wharf. I was going to see some of the old ships, but they were closed. I did tour the USS Pampatino (sp?) ... an old WWII sub. That was neat. Also hung out for a bit at the Musee Mecanique. They had a lot of old time entertainments that were fun to mess around with, and some classic video games I haven't played in ages.
I'm going to have to spend more time there. Maybe work can send me again soon.