Advertisements Johnny had an edge. I know people have tagged Dave as "mean-spirited" but he just doesn't suffer fools... and neither did Carson. Oh, and I agree that Jay continued to do mostly the vanilla show he did as guest host. But remember, Letterman guest hosted too... and when he did, he was tame. No one wanted to upstage Carson when they guest hosted. That's what got Joan Rivers the boot. The difference was, when Jay and Dave had their chances to have their own show... Dave made it his own, and Jay just kept trying to play to the safe middle. Carson didn't do that. I know when you watch old Carson shows now they might seem tame, but that's just because times have changed. Hope that better explains what I meant. Only my opinion, of course, but thanks for letting me clarify it.