I hope TO GOD, (seriously), the Craig Fergusson takes over Late Show SOON!Letterman is a prick. Craig was born for the job though, he is so funny, his weird bits are hilarious (the aquaman thing was just awesome) and he is probably the best interviewer on late night tv period.
That being said, I think Conan's show is definitely the best. His bits and his videos of him going out and doing wierd shit (i am reminded of the 19th century baseball thing, and the recent shopping for guitars on craigs list with Slash!!). and the Rodeo Road shopping spree almost had me in tears