Outside of fighters, who I don't consider celebrities, and seeing Jeremy Roenick at my little league opening day when I was like 12, I've never had a run-in with any celebs that I can recall.
Wait, strike that, I took a youth coaching class, it's mandatory that you get certified to coach, with a local news anchor. I can't remember his name, a quick search tells me it was Randy Salerno, I think he was on WGN, but he died shortly after I met him.