In elementary school I went to school with Michelle Pfeiffer's kids. When I did a summer camp with her daughter, Michelle came along on a field trip. I began to excitedly tell other kids who she was, and she pulled me aside and said that she was there as her daughter's mother and would appreciate if I did not make a big deal of her celebrity status the future.
Needless to say, I cut it out. She was very nice about this, and I've always respected the way she approached it. She was just as graceful with adults if they brought up her career or asked for autographs at school functions.