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Watch Late Show with David Letterman Season 12 Episode 21 Online

  • 6.331/10
  • COUNTRIES: United States of America
  • Subtitles: English

As it does every season, Alan's hair changes colors; Dave comments on Conan O'Brien's promotion to hosting The Tonight Show in 2009, then openly asks if he can go back to NBC to host Late Night; a Kodomo Dragon (courtesy of Jack Hanna) startles Dave.