well.... i simply cant connect with letterman in any way/shape/form myself
i agree about conan being an attention whore... but he doesnt pretend not to be.
if i were to guess why leno v. letterman... well, leno is more of a people person... i dont know...
Kilborne... well... he was i think forced off of Comedy central... and i though he was quite funny there... but i've come to enjoy Stewarts' pollitically motivated comedy. i rarely watched kilborne because of his change in style from the Daily show----> late late show (or whatever it was called) he loost my viewership
