I hung out with Bo Diddley for like half an hour, and I met one of the Drifters in Sea-Tac Int'l Airport. I've met John Penney, who is only truly famous in air racing circles, and Brian Shul, an SR-71 pilot and famed author. I've hung out with Steve Hinton, who has flown just about every airplane stunt you've ever seen in the movies. I talked to Dave Lerner back when he was still playing bass with Ted Leo and the Pharmacists. I met John Mayall and got his autograph, he was a fucking asshole.
Also, you know that guy who did the cover art for The Sims, The Sims 2, and just about all the expansion packs? Yeah I jam with him whenever I'm back in my hometown and I'm best friends with both of his sons. The only guy I've ever paid for guitar lessons? He's played several gigs with his band at the Whiskey A Go-Go. I've jammed with a man who has opened for B.B. King, Santana, Ray Charles, and many others.
tl;dr lots