I can think of several really pleasant stage door experiences:
Linda Eder after a performance of Jekyll and Hyde. I'm originally from Houston where the show premiered and was staged 3 times before Braodway. She stopped and chatted with me for about 10 minutes about them and told me which was her favorite version (but I'm sworn to secrecarcy).
I worked the theatre where Joseph toured in Houston. I met Sam Harris by the dressing rooms. He gave me a big hug and pulled out a silver paint pen to sign an autograph. He was so sweet! When I walked out the stage door, I was assaulted with camera flashes and shouts from a mob of people waiting for him. They didn't hide their disappointment, but were happy to here that he was on his way out.
At the same theatre, in the same place, I waited to meet Debbie Boone after a particularly dreadful tour of Meet Me in St. Louis. The show was awful, but I've always liked her voice. When she walked out of the dressing room, before I even said a word, she wrapped her arms around me and gave me a huge warm hug. She was so nice, it just made me want to cry. She's very religious and has written some Christian children's books with singalong tapes. She signed my program, "God Bless..."
The most fun was following a performance of Neil Simon's The Dinner Party. Veanne Cox is an old rommate and friend of a friend of mine. They hadn't seen each other in years. While waiting, I met the late great John Ritter (very nice) and Henry Winkler (also nice). When Veanne emerged, I said hello and told her I had a surprise. I pulled out a cell phone with her old friend waiting on the other line. Veanne's face lit up with wonder and amazement and they chatted excited for a while. She was really great about the whole thing. Not to mention the fact that her performance was brilliant. I was rather shocked that she wasn't nominated for the Tony.
"What can you expect from a bunch of seitan worshippers?" - Reginald Tresilian