In case anyone's interested . . .
Probably a little late for anyone not on the West Coast, but The Discovery Channel is showing 100 Greatest Americans, and so far JC has commented on two of them--Hugh Heffner (? I think--the rich recluse) at about 20-22 minutes past the first hour and Richard Nixon at about 39-42 minutes past the first hour (my clock is a little wonky, so times are approximate). He looks quite serious and academic and even came up with something nice to say about Nixon.