The title of
Charles Grodin's first autobiography, "It Would Be so Nice If You Weren't Here..." was taken from an incident that happened on the set of this movie, as he explained in his introduction: "Candy Bergen and I were filming the movie 11 Harrowhouse in a castle outside London. We were sitting in a room off of the main hall where the cameras were being set up. After a few minutes an Englishwoman appeared. I don't know who she was, but she acted as though she had a Duchess-or-something title. She said: 'Did someone ask you to wait in here?' 'No', we answered, a bit taken aback. She responded: 'Well, it would be so nice if you weren't here.'"