Working title was "Brooks Wilson, Ltd."
Eva Marie Saint here plays the wife of George Segal, ten years her junior. Saint's next screen role - in Cancel My Reservation (1972) - would be as the wife of Bob Hope, twenty-one years her senior.
Sterling Hayden and Keenan Wynn had previously been castmates in Dr. Strangelove or: How I Learned to Stop Worrying and Love the Bomb (1964) although not having a scene together in it.