I found recently an archive of all presidential phone calls from the white house from past years.
Listening to Johnson needle Thomas, the Texan politician that winks at him in that infamous photo, the one taken after the famous official inauguration photo on the plane with Jackie O. next to him. If he was it was by manipulating Johnson's huge power trip. The conversation is amusing as hell.
Supposedly the NSA has a massive collection of all of our phone calls. I wonder if they have any of the president's? http://www.usatoday.com/news/washington/2006-05-10-nsa_x.htm