When host David Letterman left his NBC late-night talk show, Saturday Night Live and The Simpson’s writer Conan O’Brien was named as host. With sidekick Andy Richter, the format of the show follows other late-night talk shows, with celebrity guests, musical performances, and comedy sketches. Recurring characters like Triumph the Insult Comic Dog, the masturbating bear, Pimpbot 5000 each have their own following.