NBC pulled the clip from Hulu, I assume because of the song rights. I love it.
[youtube]TvaZKuAoFUU[/youtube]
http://www.youtube.com/watch?v=TvaZKuAoFUU
[youtube]TvaZKuAoFUU[/youtube]
http://www.youtube.com/watch?v=TvaZKuAoFUU
I don't watch either of them but I agree with Bart. It is not Leno but rather NBC trying to bring the ratings up.
EDIT: I would however, love to get the kind of firing bonus Conan will get.
Conan sucked before this and now he is walking on water. At least Letterman is getting a kick out of it.