Man, there's a lot to do in the Bay but I'll try and give you a condensed answer. For food, I'd do a search for the Bay Area food thread,there's a lot of good places listed there. As far as Filipino food, my favorites are Sinugba (Daly City), Tribu (San Bruno), Gerry's Grill is cool(Union City...
I got my groomsmen engraved flasks that were in the shape of cell phones. They were actually a lot cheaper than regular flasks that I found at the mall (evenwith engraving). You can check it out here:
http://www.cellphoneflasks.com/cell-phone-flasks.html