Conan Christopher O'Brien (born April 18, 1963) is an American television host, comedian, writer, producer and performer. He is best known for hosting several late-night talk shows, the most recent of which, Conan, premiered on American cable television station TBS in 2010. O'Brien was born in Brookline, Massachusetts, and was raised in an Irish Catholic family. He served as president of the Harvard Lampoon while attending Harvard University, and was a writer for the sketch comedy series Not Necessarily the News. After writing for several comedy shows in Los Angeles, he joined the writing staff of Saturday Night Live. O'Brien was a writer and producer for The Simpsons for two seasons until he was commissioned by NBC to take over David Letterman's position as host of Late Night in 1993. A virtual unknown to the public, O'Brien's Late Night tenure received unfavorable reviews and remained on a multiweek renewal cycle during its early years.