talk show host
Birthplace: Brookline, Massachusetts
O'Brien replaced David Letterman as the host of Late Night at NBC. Before taking over the popular talk show, O' Brien wrote for The Simpsons, HBO's Not Necessarily the News and Saturday Night Live, where he won an Emmy Award for Outstanding Writing in a Variety of Music Program. O'Brien attended Harvard University and served as president of the school's comedy journal, The Harvard Lampoon.