36. Keystone. This is the worst beer currently sold on American soil. It sits behind chilled glass in a convenience-store fridge like a dumb rebuke to the explosion of American beer variety all around it. In 1978 there were 89 breweries in the U.S.; today there are more than 2,400, and most of the new ones are better than most of the old ones. In 2013 craft beer is no longer the exclusive domain of West Coast weirdos and psychotic woodsmen. These fine days you can score Samuel Adams or Sierra Nevada at the least ambitious of convenience stores and Dogfish Head 90 Minute on the least reliable of trains. And then there is Keystone, which first appeared to the world in 1989, in Chico, Calif., home of the Sierra Nevada Brewing Company. Keystone separates itself from the rest of the crap pack by augmenting the typical stale/sour flavor profile with notes of brown bananas and green armpits. Keystone is worse than Heineken and murder.