Recognizing famous faces.

Johnny Cash. Upon boarding an airplane, I turned around, and there he was—the “Man in Black” (truly dressed in black and carrying a black guitar case). I asked for his autograph and, in the absence of a scrap of paper, had him sign my boarding pass only to have that part immediately taken away by the airline clerk. Seeing what was happening, he again signed the little part of the boarding pass I got back (I still have it, and I bet the airline clerk also has hers).