How good does the President feel?

I didn't see the President's press conference. I'm just reading, but it seems to me that he's awfully relaxed, joking like this, when he's under fire about not complying with FISA restrictions:

THE PRESIDENT: You asked a multiple-part question.

Q Yes, I did.

THE PRESIDENT: Thank you for violating the multiple-part question rule.

Q I didn't know there was a law on that. (Laughter.)

THE PRESIDENT: There's not a law. It's an executive order. (Laughter.) In this case, not monitored by the Congress -- (laughter) -- nor is there any administrative oversight. (Laughter.)

UPDATE: I'm watching the C-Span replay of the press conference now, and I'm even more impressed by the strength of Bush's confidence. This man is happy. But I had to laugh out loud at this revealing flub:

Q: [W]hat would you say is the biggest mistake you've made during your presidency, and what have you learned from it?

THE PRESIDENT: Answering Dickerson's question. No, I -- the last time those questions were asked, I really felt like it was an attempt for me to say it was a mistake to go into Iraq. And it wasn't a mistake to go into Iraq. It was the right decision to make.

I think that, John, there's going to be a lot of analysis done on the decisions on the ground in Iraq. For example, I'm fully aware that some have said it was a mistake not to put enough troops there immediately, I, I, I, uh... or more troops.

I know he can say that he's only restating the criticism, and it doesn't necessarily mean that he agrees that there weren't enough troops, but he looked as though he regretted saying that. I've touched up the text from the transcript -- after the boldface -- to give more of a sense of how he signaled regret.