I agree. He was the most conversational and natural.
Mine too. He was better than I expected. The audience actually laughed at his jokes.
Obama's schtick, I think, is wearing thin. There were a few cheers from the audience when he appeared, but nothing remotely close to the noise generated by the Monchichi or David Cook fans.
And fly-over country, which makes up the largest chunk of Idol's audience, probably didn't appreciate seeing him (or Hillary) either.