From a reader, both kind and merciful:

Hello Mr. Robinson,
Great job on your interview with Mr. Podhoretz. I’m looking forward to segment five.You didn’t ask for suggestions this time but I’d like to offer a couple.
You have a great smile. When your face is relaxed, the lines at the corners of your mouth make it appear as if you’re frowning. Smile a little more.
When Mr. Podhoretz is listening to your questions he does not support his head with his hand. I think the fact you do so when he is reponding creates a sense that you’re thinking “Will you please get on with it.” I don’t believe that that is what your thinking but it gives me an uneasy feeling to see you do it. It’s, perhaps, a little too informal/casual body language?

This sort of comment is actually extremely useful–the more so since I’ll be shooting a fresh show tomorrow, this one with Shelby Steele on his new book, A Bound Man: Why We Are Excited by Barack Obama and Why He Can’t Win. No chin on hand, I promise. And I’ll smile very broadly, especially if Shelby persuades me that Obama really and truly can’t win.