Chat show legend David Letterman, who has just revealed details of an alleged blackmail plot, has been taping his Late Show at New York's Ed Sullivan Theater since 1993.
Pop star Madonna (left) is one of many guests who have made repeated visits to Letterman's Late Show. One memorable appearance in 1994 saw her pepper the interview with swear words.
Sports stars have been regular guests too. Here tennis player Monica Seles (left) talks in 1995, the year she returned to the circuit following her on-court stabbing two years earlier.
Even royals have found time for the veteran broadcaster. Here the Duchess of York pays 'Dave' a visit in 1996, the year she and Prince Andrew divorced.
Vogue editor Anna Wintour took time out from her busy schedule earlier this year to tell Letterman a few tricks of her trade.
Letterman has made no secret of his debt to Johnny Carson, paying sincere tribute to the longtime Tonight Show host at the 2005 Primetime Emmy Awards.
But his hosting of the 1995 Academy Awards was less well received. Here actor Tom Hanks (left) looks bemused as he is called upon to witness one of Letterman's famous "stupid pet tricks".
Letterman went to Iraq in 2003 to entertain US troops. But his support for soldiers has not stopped him mocking President Bush's decision to go to war.
President Obama used an appearance on The Late Show in September to dismiss suggestions that criticisms of his policies were prompted by racism.
Entourage star Jeremy Piven (left) had a different agenda, though, appearing on an edition the same month to outline the medical reasons that caused him to leave a Broadway show.
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