Visiting The Bay Area

While not about Prius, I figured I'd consult the wonderful Prius drivers in the bay area!

I'm visiting up that way for a weekend and a few days later this year...in mid-October, actually, and I was wondering if any of you area locals could perhaps give me tips about how to best spend my time there. I'd like to do a mix of the requisite touristy stuff and mabye some more hidden local gems if I can...so if any of you have tips for where I should go or what I should do, please tell me! :mrgreen:

Thanks in advance,
Chris (and Lizzie)