Working in a magic shop...

Working in a magic shop in my 20s, Muhammad Ali came in. My boss (huge Ali fan from back in the day) was visibly staggered. I guess Ali was his idol when he was younger. Ali hung around for a couple hours, we did some tricks for him, he did some for us (pretty good, too, considering his hands trembled and he didn't talk). He was totally beyond cool with us taking some pictures (he posed my boss punching him in the chin), and wrote a "thank you" post card to us a week or so later... ...he signed it "Cassius Clay, oops, I mean Muhammad Ali"