A landmark restaurant in San Francisco’s Chinatown will serve up its final meals Friday. Sam Wo’s gained fame as the home of Edsel Ford Fong, who was known as the world’s rudest waiter. The restaurant has been featured in numerous San Francisco guidebooks, and has hosted China’s president, David Letterman and a host of other celebrities, and was featured in Spike Lee’s 2004 film “Sucker Free City.”