So I worked last night and there was this guy at a table that I recognized and kept looking at and was sure I knew from somewhere. He was really cute and looked about my age. When he was leaving I was walking past and I said, "Are you a local?"
Me: Do I know you from somewhere?
Guy: You might.
Guy: I'm an actor.
Me: Oh, I'm sorry to have bothered you.
Guy: It's okay, people are always asking me if I went to high school with them.
Me: And do you say, "Um, no, I'm famous."
Coworker: What did you say to that guy?
Me: Just asked him if I knew him from somewhere.
Coworker: And do you?
Me: Maybe, he's an actor.
Coworker: Yeah, I thought I knew him from somewhere and then finally realized I used to watch him on Felicity. I love him.
(looked him up on imdb and figured out that I'd seen him in Underworld)