Ever wonder...

Ever wonder what would happen if you randomly ran into one of your favorite actors on the street?  It's unexpected.  You didn't plan ahead what you would say to them if this happened, because you had no idea this was going to happen.  What would you say?  I'm pretty sure that I'd say "Gah...uh...duhhhh...ummm.....Hi."

Given time to prepare a proper speech, I'm sure I could say something like "I'm a big fan of your work.  I especially enjoyed you in ______________ ."

Taken by surprise?  I'm sure there would be silence.  Followed by passing out.