Responsible for 4.38 percent of the world's wine, Australia originally entered the winemaking business by accident. Two-fisted drinkers with a penchant for demon rum were rowdy enough to make the local governors anxious to find a less alcoholic alternative -- and Australian table wine was born. It would be a great story if heavy drinkers immediately put down their tankards in favor of a nice Chardonnay, but that's not the way it happened. Rum and beer remained the clear favorites until some very clever winemakers in the 1970s learned how to turn the dry and sometimes harsh Australian landscape into productive wineries -- more than 850 of them. Chardonnay and Syrah are the top wine grapes grown Down Under, followed by Cabernet Sauvignon, Riesling, Semillon and Cabernet Sauvignon.