If you're a wine enthusiast, you've probably spent some time in wine country, whether in California's Napa Valley or any of the other wine growing regions around the world. Each vineyard has its own tasting room and each room has a staff of hosts. Don't confuse a tasting room host with a bartender, though. Hosts and pourers are hired because they know a lot about wine. And it's their job to sell the wine lover on the particular line of wines from the vineyard they work for. A personable and experienced wine host will walk you through the wine flight, explain to you what you're drinking, and ideally, send you home with a case or two of the good stuff.