Prompt: have you ever met anyone famous?
Not as such, and the way my brain works I frequently look at billboards with famous people on them and have no idea who they are. I think the closest I've ever come was a book signing with Clive Barker, and that was more a brief, predesigned interaction than an actually meeting. (Though he did agree to sign our books to the names of our Nightbreed characters.)
I think I just keep the wrong sort of company to meet anyone famous. What about you? Any good stories?