Ira Glass's sister once met David Sedaris, and commented that he was much nicer than she thought he would be, given his writing. David replied, "I'm not nice, just two-faced." In this story, David shares the thoughts running through his head as he attempts to buy a cup of coffee.
Famous people are supposed to be somewhere else, invisible to us. Comedian Tig Notaro tells this story about repeatedly running into Taylor Dayne, who was a pop star in the late 80s and early 90s.