Other than politicians (mayors, first selectmen, etc), not really.
Granted, it's possible that I've met a few I've forgotten about. I went to a wrestling show once where I had the opportunity to talk to some some guys who had been big in the WWE and were going to be big in the WWE, but it wasn't anybody on meeting. Well, Christian Cage was there, I guess I wouldn't have minded meeting him, but it would have been during an autograph signing and I didn't care enough to pay whatever he was charging for an autograph.