My Aspie kids don't do this, and neither does my one non-Aspie kid. I do know one person who does that, and he does have Asperger's Syndrome.
He's a nice guy, doing well in college, but he's very twitchy. He's also got a lot of issues with making eye contact and has more than his fair share of difficulty making normal social contact. Still, he is very competent academically and will be able to live and work independantly, though he probably won't ever have many friends. His family adores him. He has a brother at Princeton, who worships him. His thing is movies. He knows them all, old, new every genre. Can you tell I'm a big fan of his? He used to come into the place I worked, because it was near a movie theater. I got to know him and his whole family a little. Nice people.
I don't know if that helps at all. Maybe your Doctor can tell you how common it is, or maybe you can look it up on a book somewhere.