I know that Letterman was not every ones cup of tea but compared to some of the wannabes well I won't say any more.
He invited Warren Zevon on to his show knowing he had a short time left and dedicated a whole show to his career and his thoughts on life and death and I can say that if you haven't seen it , its riveting viewing and you should from many a perpsective.
He only did that once and was obviously a huge Zevon fan , had him his show a dozen or so times.
I watched all of them a number of times as I respect WZ immensely as a songwriter and a musician.
LGAM is definitely in my favourite 50 songs of all time