He has achieved "rock-star" status in academia - quite deservingly. I wonder how much more he will contribute directly to the field during the remainder of his career. I suppose once you reach his level focusing on these grander initiatives will help create a legacy.

Funny aside: I saw him walking up University Ave a few weeks ago. He was all bundled up in a coat and hood. It was cold out, but I also suspect he is becoming recognizable as a celebrity by some and prefers to keep a low profile. If I had recognized him earlier I probably would have tried to stop and chat.