Twenty years ago, the NES changed the face of U.S. gaming. All this week, 1up.com has a series of features celebrating the anniversary of the Nintendo Entertainment System. From the site: "When the NES launched, America hated videogames. Well, sort of. The Atari 2600 had upset folks by flooding the market with bad software and, at first, retailers were reluctant to sell another system. But the NES was a hit, controlling a healthy 90 percent of the U.S. home videogame industry at the peak of its popularity."