The life cycle of a TV sensation can be stunningly quick: from talk-of-the- tube to zap-inducing bore in just a few weeks' time. A look at the trajectory of TV's meteoric names:
Bart Simpson The ultimate cautionary tale: from cameo appearances to T-shirt overexposure in just one year. Now cross-channel rival Bill Cosby is crowing that he survived the Bart challenge.
Wolf Blitzer The man with one emotion (stoicism) and a singular name launched a thousand late-night gags. Now that the war's over, his popularity may evaporate. But as a serious journalist, he's probably better off without the hubbub. Just ask...
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