Howard Stern told Jerry Seinfeld this morning he believed Kaufman could've been part of Seinfeld's main cast. "You know, it's funny that you say that, because Michael Richards is one of those parts where you could never cast somebody else, but now that you mention it, Andy could have pulled off Kramer," Seinfeld said in response. "He is the only other name I have ever heard, now that you mention it, who could have pulled off Kramer. That's interesting." Seinfeld also confirmed that his 23 Hours to Kill special is likely to be his last.