John Clarke is the father of Liz, one of my close friends from college. Liz and I were physics undergrads at Berkeley and her father was a professor there. Thanks to HN I had the pleasure of being the first one to tell her that her dad had just won the Nobel Prize (I saw the news before she woke up, due to time zone differences). I wish I could post photos here, she sent me a beautiful picture of him filled with joy as he received a free parking pass from Berkeley with the expiration date "NEVER" later that afternoon :-D