This comment on PVRblog is a neat inside look at how the Daily Show manages media clips. (It's a fairly primitive mix of Tivos, Beta tapes, and video archive services.)
As I was describing Jon Stewart's appearance on Crossfire with sk, I was comparing him with Andy Kaufman because he's pushing the boundries of the audience. And David Weinberger's post—Stewart on Crossfire—compares him with Lenny Bruce and Richard Pryor. I think Stewart is making the leap from great comedian to icon.