i'm sure it won't happen, but it would be absolutely hilarious if, for whatever reason, Leno gets terrible ratings once he gets back to the Tonight Show. i understand that Fox gets fine ratings for its Seinfeld reruns in the same timeslot, but that network has always felt like a baby brother against CBS, NBC and ABC, and having a strong late-night show would help to give it some legitimacy. i definitely don't see Conan beating Leno or Letterman in overall ratings, but he'd definitely win that 18-49 y/o demographic, which is just as important, if not more.