Red Red Wine You Give Me Whole Heap Of Zing

So, our big wine tasting is coming soon! We've got over 20 people confirmed, with who-knows-how-many additional assorted hangers-on, offspring, pets, and jesters. Our theme is "Northern California" this year, so everyone has been asked to bring a bottle from that "region". I've already had a couple people ask me what they should bring. Honestly, if you can't find a wine from Northern California you might as well cash in your chips right now. And these are my friends :)