I've met many famous people over the years like Bono (he's small and soft-spoken), Jay Kay from Jamiroquai (he was very friendly and polite), Jim Kerr and all the Simple Minds members as their my favorite band and many others but I do have favorite stories:
I was studying journalism writing in high school and was invited to a meeting with the actor, Gregory Peck (along with 30 other students) as he was appearing in a play in the city and got to interview him to learn how to interview and write up a story. He was the most kindest man and had the most interesting stories.
That same journalism teacher, unbeknownst to me, was once married into the Estevez family. She casually told me that her nephews were in our town and were joining us for lunch in our classroom. I thought nothing of it. It turned out that the Estevez family are known professionally as Sheen. Her nephews were Charlie Sheen and Emilio Estevez. That was back in the 80's when Emilio was a "Brat Pack" member and Charlie had just done "Platoon". It was a very interesting lunch.
My favorite story was when Jack Nicholson was in my city filming a movie in 1982, when I was 12. My relative was an extra on the film. She overheard him ask what there was to do in our city and she casually invited him to her house for a "cookout" with her family. He said he would think about it. She gave him her number and she went home. He called and said that he'd love to come to a cookout and asked for the address. There was no cookout. She took the opportunity and didn't think it through. She called every member of the family to come to the house and bring food and drinks. It was a completely crazy afternoon and pulled off a "family cookout". I didn't know who he was at the time but I liked him because he was the most fun and charming man. He played with us kids, he helped cook, he brought lots of beer, helped clean up.