Carol Burnett had a weird, great story of the amazing Jerry Lewis: When he was rehearsing for a guest gig on Burnett's variety TV show (I think late 1970's), Jerry Lewis met each dancer/actor on Burnett's staff he was rehearsing with, and he verbally asked and recieved each of their Social Security numbers. Then, in the days after, when rehearsing with them, he called each one by their numbers, not their name! As in, he'd say "Come over here 459-91-4301". Very strange and funny thing to do to demonstrate number memory skills.