Having had a college roommate that ended up running the local music theater, and then went on to run the entertainment union for the state, I've had the opportunity to hang out with and be around a lot of famous people. Still today, he will call me up to see if I am interested in meeting David Leno or Steve Martin, or Spielberg is filming in town. He just runs in those circle... I just happen to be lucky.
But, most of the most famous musicians I've met, are people that are self centered and total dickheads to the people who make them what they are. I mean, more than just a little artistic ego, I mean... I wouldn't cry over their dead bodies sort of self-centered ego-ness. It really ruined fandom for me. I could never be a fan. I mean, I really like some artists work, but as far as crying over their dead bodies... not really.