Even though Dean was extremely talented and funny, the show was no fun to do. I would fly out once a month and tape four shows and then fly back to NY the same day. Dean Martin was never there. I talked to an empty chair. Dean was in the shot with me only once, after that never.
People think when performers work together they also have a personal relationship.
That seldom happens. They both have their own lives to live. And when the show is over they go their separate ways. My only preparation was memorizing it. Comedy is much harder than drama, even though it doesn't seem that way.