Here's a link to some really good anecdotes by a person named Daniel Kellison. He started off being a talent co-ordinator for the "Late Night with David Letterman" show then moved with Dave to CBS and the "Late Show". It's a bit of a read but worth it to peruse his anecdotes about Sammy Davis Jr., Drew Barrymore, Julia Child, Sean Connery, Julia Roberts, Madonna, Peter O'Toole and our own Sir Paul. I especially like the "elevator" anecdote about Paul and some special friends that came out of the elevator with him. Just a word of warning, there is some profane language used in the article. http://grantland.com/features/my-letterman-years/