David France was Stephen's guest on the June 26, 2007 edition of The Colbert Report. Mr. France says in his article The Science of Gaydar there are certain characteristics and traits common to gay people which can help people identify them. When France appeared as a guest on The Colbert Report, Stephen could tell he was a gay by the shape of his jaw. And by the fact that his last name is France. Everyone else could tell by his speaking voice.