I just found out a couple days ago that my next door neighbors are both pretty well known. One is an author and the other used to be a popular singer who had a huge hit in the 90s.
Last year I was in Beijing having dinner with a coworker's parents and found out that my coworker and Yao Ming were good friends in high school. Their best friends used to date each other.
Such a small world. I lived next door to Gillette and didn't even know it for 4 months. I talked to her often and never would have guessed that she sang Short Short Man.