Person to Person developed out of Edward R. Murrow's belief that human beings are innately curious. That curiosity was intense regarding the private lives of public people, or visiting the extraordinary in the most ordinary environment - the home.
Some of the original at home interviews available on YouTube:
Marilyn Monroe (1955)
Elizabeth Taylor & Mike Todd (1957)
Sophia Loren (1958)
Bette Davis & Gary Merrill (1956)