Lots of concerts.. Willie Nelson, Alabama, Ingrid Michaelson, Joan Baez, Peter Paul and Mary, Ian & Sylvia (THAT was really close, very small venue), Juice Newton, indeed close enough for sweat

, Tina Turner (alas, not close), Gordon Lightfoot, Big Mama Thornton (very small venue, and later at a Blues festival, larger), Don McClean, Men at work, Everly Bros, American Idol tour, so many more. Last year at one of the Men Alive (Orange County's Gay Men's Chorus) concerts, Nicki Blonsky was featured and she came out to the lobby with all the guys to mingle and I got to talk to her.. she appreciated how short I am, though she is even shorter! (I'm 5').
Other celebs.. I've sat a couple of feet from Martina Navratilova, Monica Seles, Aranxta Sanchez' mother and dog, ran into Venus Williams in a garage and talked to her, been in an elevator with Black Eyed Peas and also Conchita Martinez.. not the same elevator or even the same city or state) , waited to get into a tennis match a foot away from Wilt Chamberlain (REALLY tall!), a couple of feet from Joan Baez at a press conference, almost knocked over by Gloria Allred at a demonstration, next table at restaurants with John Wayne and another place, Danny Thomas (John Wayne lived in the same city we did, Danny was eating there on the way to Laguna Beach, when Marlo was in a play there).. Elisabeth Kubler-Ross (lecture and talked but didn't bring a book to sign.. she thought getting signatures was a colossal waste of her time.. actually she said she would rather have time to smoke a cigarette!
Book signing, Mary Engelbreight, Jon Archabault (he was the fantastic illustrator for Chicka Chicka Boom Boom.. and he drew a coconut palm with his signature.. very nice guy), Ozzy Osbourne, quite a few writers of books on trauma and abuse, also labrador books, and talked to those authors.
I went to high school with Paul Le Mat who was in American Grafitti, Melvin and Howard and other movies, and Greg MacGillivray who was half of MacGillivray-Freeman (IMAX film process)
Almost forgot the Nixons! I was working at my first job as a programmer trainee and one of the older programmers was all excited because the Nixons were all coming to the courthouse nearby (Santa Ana, CA) to register to vote and she was really hot to go over, and dragged me along. So we were mere feet from Dick, Pat, Trisha and I think Julie was there too. Pat and Trisha were so tiny. The other person with me got to shake his hand. She was excited. I was interested, but not that excited.