NEW YORK – MAY 20: David Letterman hosts his final broadcast of the Late Show with David Letterman, Wednesday May 20, 2015 on the CBS Television Network. After 33 years in late night television, 6,028 broadcasts, nearly 20,000 total guest appearances, 16 Emmy Awards and more than 4,600 career Top Ten Lists, David Letterman says goodbye to late night television audiences. The show was taped Wednesday at the Ed Sullivan Theater in New York. (Photo by John Paul Filo/CBS via Getty Images)
