Letterman was born early enough to appreciate a folksy radio host like Arthur Godfrey, an early hero, and he thoroughly absorbed the deconstructive self-consciousness that Steve Allen brought to his reign over "The Tonight Show" from 1954-57. (Where Allen once covered himself in tea bags and had himself dunked into a cup of hot water, Letterman would later bedeck himself with Alka Selzer tablets and lower himself into a giant glass of water for some fizzy fun.) Talk shows were always Letterman's goal. To break in, he went the Hollywood comedy-club route with moderate success; the consensus seems to be that he had cutting jokes and thinly veiled contempt for two-
But, he once said in a rare flash of candid careerism, "You just use the clubs as a steppingstone." He put in his time in TV hell -- appearances on "The Gong Show" and "The $20,000 Pyramid"; a little stiff singing and dancing on Mary Tyler Moore's ill-fated 1978 variety show "Mary"; a guest role in a 1979 "Mork and Mindy" that actually required him to approximate acting. All the while, he was plotting his own talk style. He had little use for the naked emotionalism of the other great host of his childhood, Jack Paar (who "Tonight"-ed with wracked sobs from 1957-62); no, Dave wanted to be like his Midwestern-born idol, Johnny Carson, who since taking over in '62 had turned "The Tonight Show" into a well-oiled (and sometimes excessively oily) machine gleamingly efficient at both star-
Unfortunately for Letterman, that show was in the morning, a time of day when viewers were unaccustomed to countenancing the sort of amiably ramshackle, anything-
This was, in the memories of many, Dave's golden era, with characters like portly dumb-dumb Larry "Bud" Melman, show writer Chris Elliott's "Man Under the Seats" and a vertiginous episode broadcast upside down. Working with a shrewd, cutting writing team that included then-girlfriend Merrill Markoe, Gerard Mulligan, Matt Wickline, Steve O'Donnell, Randy Cohen, Jim Downey and Tom Gammil, Letterman was doing the most innovative, ironic comedy on the air. Some guests have always responded avidly to Letterman's blithe contempt for show-business obeisance, recognizing in his irreverence an opportunity to snub it themselves: Personalities as various as Bill Murray, Steve Martin, Paul Newman, Alec Baldwin, Bonnie Hunt, Kevin Kline, Drew Barrymore, Matthew Broderick and Tony Randall have all proven delightful company, game for anything Dave wants to throw at them and often giving him more than he bargained for. (Insert your own Drew-