A quick postscript on the Paul Simon show (which I have decided was better than I may have indicated):
At one point, Simon's wonderful band broke into a blues instrumental that I thought I recognized, which then segued seamlessly into Paul's "Slip Slidin' Away."
A little intertube research has confirmed my impression -- the instrumental was, in fact, Bill Doggett's classic "Honky Tonk." Kudos to whoever thought that transition up.
And because I love you all more than food, here's the audio so you can do it yourselves.