This thread reminds me of the time I murdered someone in cold blood who liked orange starbursts but hated pink ones.
I don't watch any of them on the reg, but if I did watch one, it would probably be Fallon. From time to time he/his team put together some really elaborate bits that transcend the medium, imo. I don't care about the celebrity interviews in general, though. They're not there to see their old pal Jimmy/Conan/other Jimmy; they're there to plug their product. And since I'm not very interested in the lives of celebrities (real or imagined, see: Entourage thread), I watch the first half and then move on to something else.