I've seen David Sedaris read three times; twice, I acted in an official capacity, selling books and such like, so I got to talk with him. No surprises; he's an extremely nice guy. After one gig I went out and got him a strawberry yogurt; the next day I got a thank-you note he'd typed at his hotel room.
I think he's gotten better with every book; Dress Your Family in Corduroy and Denim is not only very funny, it's truly moving in many places.
Here he is on Letterman, reading his essay about the Stadium Pal. If you're not familiar, it's... well, just watch.