It may not be Napa or Sonoma, but this area is also known for it's wines. We took the Wine Trail, and were able to stop at two of the wineries along the way. The drive is beautiful, and even though we're not "winos," we had fun tasting them and learning more about them.
Foxen Winery (this one was my favorite, because it had a kind of rustic feel to it)
Fess Parker Winery (this one had a beautiful piece of property)