I have met a few famous people. Most of them were not big-named ones. I went to college with some well-known radio personalities in the Boston area.
When I met some in person, I stammered and felt like I made a fool out of myself. One time I shook hands with a radio preacher that I had loved listening to. He was at a church to speak. He went to a table to sell his books. I asked him who he was. He told me and felt so dumb.