A couple of folks have written to me to suggest that the man behind the Alfred E. Neuman mask in yesterday's video link probably wasn't Fred Astaire and was probably Hermes Pan, who was Mr. Astaire's main choreographer. This may well be…but MAD sure seemed to think it was Mr. Astaire, and the book Hermes Pan: The Man Who Danced with Fred Astaire by John Franceschina says it was Astaire. We may never know for sure…