Conan O’Brien, Weird Al, Jon Lovitz and Hank Azaria were among the high-profile stars who performed songs and talked about their involvement with the long-running Fox series.

Late night legend Conan O'Brien wrote for The Simpsons for only two years, but his episodes still influence the show today.

Television Academy Hall of Fame honoree Conan O'Brien discusses the future of late-night TV and praised Stephen Colbert ...