Fleet week. Really too crowded to see much, but I went for a two hours walk through the City's newup and coming section: Hayes Valley, a fine mix of Gucci and druggy. There is a really cool German restaurant next to the homeless shelter, though.
I didn't even know SF has a new metro system, much less that you can take it right to within 500 feet of the Pacific.
The Blue Angels were pretty cool, but I felt sorry for the Coast Guard guy flying the Hercules right before them--cool job and all, but he has to know that everyone who's watching is there for the F18s.