Conan O'Brien is a talk show host.
Conan is a late-night talk show airing each Monday through Thursday at 11:00 p.m. eastern time on TBS in the United States . Conan Christopher O'Brien ( born April 18 , 1963 ) is an American television host , comedian , and television producer . With the retirement of David Letterman on May 20 , 2015 , O'Brien became the longest-working of all current late-night talk show hosts in the United States , at 22 years .