"Economists found that an index of first-growth Bordeaux from top vintages 'hugely outperforms' their two other wine indexes from 2005. Top Bordeaux wines include Chateau Margaux, Chateau Latour, and Chateau Lafite Rothschild. The elite wines produced a more than fivefold return compared with the regular wine index, which more than doubled."
Part of the key, apparently? Like gold, wine is a tangible asset. Which means that no matter how bad things get, you can at least still get schnockered in style.