I haven't yet (that I know of), but I just sold a jersey to the brother of the guy who used it, which got me thinking about this.

My only brush with super stardom was with someone who thought he was famous. People in the Atlanta area probably know a guy named Jerome Jurenovich. He does pre and post game Braves commentary for Fox down here. A few years ago he emailed me about a helmet I was selling. His email went something like "Do you happen to have any old flapless ABC helmets? My name is Jerome Jurenovich and I am a sports anchor. You probably remember me from CNN." I didn't have any helmets for him, but I'm sure he was more disappointed about me not knowing who the heck he was.