Jerry Seinfeld was on Larry King who mistakenly asked whether he left the show or he got canceled. It's fascinating to see Mr. Seinfeld's reaction to the question.
I actually find it fascinating when a celebrity lets down the guard and shows a true human side. It's not surprising that Mr. Seinfeld has an ego, I guess it's a pre-req to being in show business. I think it would be hard to believe that it didn't legitimately bother him.
To that end, his movie Comedian, shows a moment where he gets lost in a stand-up routine. You see the understandable neurosis that goes along with being a comedian and how quickly you can become hard on yourself. (It's also a great movie, definitely worth checking out.)