GRRM plays "Not My Job"
"Wait Wait Don't Tell Me" is a weekly radio program on National Public Radio. It's a very funny quiz-type show, and it airs Saturday mornings and repeats on Sunday (as well as being archived).
I didn't catch the whole show today so I don't know if he was asked "Why are you here and not finishing Winds of Winter?" It was obvious that the panelists on the show are fans, and familiar with Game of Thrones.