Going to have to throw in a shout for Frog's Leap, in Rutherford. Great winery. The fact that it is owned by a close friend and fraternity brother of mine is purely coincidental to my recommendation!

We were just there in July, and admittedly get somewhat special treatment. But I think that the all organic, dry-farmed wine growing concept, together with the solar-powered technology, make it a very interesting place to visit.

And that's on top of some pretty good wines. (Sauv Blanc and the Rutherford blend would be my top picks, although the chardonnay is excellent, even though I am not a big Chard fan).