Conan O'Brien mocking NBC Late night promo clip?

When Conan did his Late Night monologues, he would from time to time mock NBC's late evening commercials. He'd go "On the Tonight Show, Jay has this guest, this guest, this musical guest will be good, and etc. etc. etc.... and then.... CONAN!" It was always hilarious because of how accurate it was. Does anybody have this clip or know where I can get this clip?