Biography:Host of late night television talk shows for 33 years including the long running shows "Late Show with David Letterman" first on NBC and then CBS.
He is the longest-serving late-night talk show host in TV history.
1993-06-25 "Late Night with David Letterman" airs for the last time on NBC-TV
1993-08-30 "Late Show with David Letterman" debuts on CBS, from the Ed Sullivan Theater in NYC; Bill Murray is his first guest, Billy Joel performs
2004-05-30 Indianapolis 500: Buddy Rice wins from pole for team owners Bobby Rahal and David Letterman in a rain shortened race (450 miles - 180 of 200 scheduled laps)
2015-05-20 David Letterman hosts the "Late Show with David Letterman" for the last time, ending 33 years in late night television
Janeane Garofalo
Jonathan Winters
Michael Palin
Andy Gibb
Andy Williams
Jerry Springer