Or, I might screw with him by pretending not to recognize him and then whip out all my screens with his image on them. And when he reacts to it, saying "oh, you're a fan?" I'll say yeah, he's in my favorite band and he has such a good voice, yada yada... Acting as if I'm not talking to him at that instant. And then when he tries to tell me he IS that guy, I'll say "nice try, but you don't look like him at all. Believe me, I'd know if I was sitting next to him!"