Conan O'Brien is a host on television.
Conan Christopher O'Brien ( born April 18 , 1963 ) is an American television host , comedian , and television producer . He has hosted Conan since 2010 and has also hosted such events as the Emmy Awards and Christmas in Washington . 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 .