Banal Intercourse The backstory is that LBJ put in a recording device to the oval office and would tell his secretary when to turn it on. He would use the recordings to remember important official conversations. The recording of his phone call to Jackie O' on the day of JFK's funeral is very touching and is preserved at the National Archives.
The problem is that the secretary would often forget to turn the recorder off so there were reels and reels of emptiness punctuated by conversations like this one.
The unintended benefit was that Nixon thought it was also a good idea to record phone conversations and well... you know.