Nope, never meant a famous person before.
But a few years ago, a buddy of mine was working in a theatre in town (I live in Richmond, VA), when Christian Slater stopped by with his girlfriend. He was there because he was filming a movie in the area. I forgot what the movie was, but I'm sure it sucked!!!
Of course, everybody was jumping for joy that he showed up and it just so happened that when Christian left the theatre, he moved behind the lobby with a whole swarm of people, when co-worker of his walked up to my friend and said, "Dude, Christian Slater is here". He said out loud, "that fool hasn't hasn't done a good movie since Young Guns 2".
Christian heard him and gave him a nasty look. I'm still laugh my ass off at that one.