Doubt it will be this in the special, but I saw Chapelle live a couple years back and I've never experienced anything quite like it.
Really strange to have him wander out, stand there smoking like a chimney for 2-3 hours, often just shooting the shit with the crowd and being extremely amusing without really having to smash into a lot of material. I think every other comedian was ruined for me that night.
People are asking him some pretty hard hitting questions about quitting the show and islam and shit and he is just taking it and answering himself pretty well.