I am more willing to introduce a friend to someone well known if they don't ask and I know they can behave themselves....
I had one friend back at home, who thought for sure I would introduce her to an actor I worked with...and after seeing her try to interact with a local hockey player at restaurant one night, there was no WAY I would even introduce her to my mom.... LOL
I don't treat them any differently then anyone else, because they're still people...

Though some of this is kind of new to me, so the jaw dropping when after a show the actors come up to ME and chat, and the fans see this... I think it is still kind of cool.. like "yep, that is Bryan... good guy, he knows the best place for sushi!" I feel ever so slightly special.