"Gracious"? Maybe clueless. He seemed to have no idea why Jake was there. His "congratulations for what?" flub. Jake was the one who was gracious.
Letterman looks like he just got out of bed and walked on the set. Cue cards and obnoxious banter with Shaffer doesn't require a lot of preparation.
Tell us what you really think, Paul!
Seriously, I don't have opinions on any of these late night guys, 1) because I can never stay up late enough to watch them; and 2) on the very few occasions when I have ever stayed up late enough, I thought they were so stupid, I was wondering why I was up and quickly went to bed.
If that makes any sense at all....
L