Late night talk show host Conan O'Brien celebrates ten years on the air Sunday September 14, 2003, with a primetime special on NBC. In 1993, he moved into the Late Night host slot when David Letterman went to CBS. Prior to Late Night, O'Brien was a writer for Saturday Night Live and writer and producer for The Simpsons.
O'Brien took over David Letterman's spot in 1993, and his "Late Night with Conan O'Brien" has just celebrated it's third birthday. Previous to that, he was a writer for Saturday Night Live and The Simpsons.