He's a celebrity to me, though most of you wouldn't know him.
I was on the bus coming home from work when a couple got on and the woman sat near me. The bus was crowded so there weren't many places to sit. Since they were older than me, I decided to stand up and allow the man to sit down next to the woman I assumed was his wife. When I saw his face, though, I instantly recognized him as the famous American-Hungarian Grandmaster of chess Pal Benko.
I said hello, and he asked if I recognized him. I said I always read his columns in Chess Life, and I told him that I saw him in Iceland. He asked where I worked, and I told him. He than asked if I was playing in the chess tournament series in Budapest. I told him I don't get much free time, but I did play in it last November. Sadly, my stop had already arrived, so I had to get off and couldn't speak further with him.
I would never want to bother someone like him, but he and his wife seemed nice. It would have been awesome to invite them to dinner or something, but I would never want to impose.