I only remember bumping into one person. I was entering an elevator in Marshall Fields at Water Tower in Chicago just as Oprah was exiting. Walked right in to her. The friend I was with yelled "It’s Ofrey" and that’s when I looked up and saw her face.
When I was little my family went to California. I don’t remember exactly where we were but we turned a corner and my mom ran smack dab into someone’s stomach. After we passed the man my brother who was around 25 asked if my mom knew who that was. She ran into Raymond Burr.
Other than those 2 instances I’ve never had it happen.