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David Letterman: The Mark Twain Prize

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Hailed as one of the most innovative and influential broadcasters in the history of television, David Letterman receives the 2017 Mark Twain Prize for American Humor. In 33 years on late-night television, Letterman surpassed even his mentor, Johnny Carson, as the longest-running late-night broadcaster in American history.

Aired: 11/20/17 | Rating: NR

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