For the first time in 13 years, but more importantly since Conan O’Brien lost The Tonight Show to Jay Leno, he appeared on The Late Show with David Letterman. So why would the man with the chin be so nervous? Because the two talk show hosts who lost The Tonight Show, since both were promised the job, to him were on a television together and had the medium to say whatever they wanted about the Indian Giver. Sometimes the best way to get back at someone is to say nothing at all and just hint at it.
UPDATE: Here is more from Conan interview with Letterman.