About 15 years ago, as a HL I had Bill Murray next to me during the 2nd half of a HS prep game. It got to be a 5 possession game late in the 4th quarter and he began to clown around for the visiting (and victorious) team parents. I was going to be his foil and really didn't have a say in the matter. It was a hot day so he toweled me down like a fighter, made jokes about me going to Belmont to ride after the game (knickers era), etc. Afterward he signed an autograph for my two girls.
Two years later I get the same game and am on the same sideline. He is again there, but this time the game is closer. He respected the athletes and remained a quiet spectator.