Me too PM---I am so star struck all the time when I see someone like that.
Some people can just go right up to anyone, celebrity or not. For example, Dillon graduated with Sean Astin's (Rudy, Lord Of The Rings etc) sister in law and his wife was a graduate of the our high school so she did the commencement speech this year. He of course was there also with their family. We occasionally see him in the area when they're here visiting etc but my niece last Sunday marched right up to him with pen and program and had him sign it. I would never have that nerve! Same thing with Oprah Winfrey who use to have a home over near here, she'd be spotted around all the time and you'd hear people say they got her autograph or talked to her. Not me for sure! My daughter's dance group use to occasionally practice in the park and one day a stretch limo pulled up and the back window went down and there she sat watching the girls. When they were done she yelled "you go girls!" and they drove off. I guess they are regular people also but still, I wouldn't bother them.