My husband has a freakishly high luck stat in real life (well duh, I married him), and he always seems to be in the right place at the right time.
This came up in conversation because through his work and everyday life, he's been able to meet a number of celebrities and famous folks such as Jane Goodall, members of The Deftones, and other miscellaneous actors and musicians.
When it was my turn, I had no one. I guess I need to get out more or live in LA or New York?? In lieu of celebrity sightings, I offer to you my celebrity crush:

Yes, that's Mark Hamill. Yes, I want him to talk to me in the joker voice.
Have you encountered anyone of cultural or entertainment significance in your life? Have the photos to share? Anyone you'd like to meet, but haven't had the opportunity to?