Ron Howard You can actually tell that it's him.

This was after Ron had finished directing the scene I described in the intro. I doubt
that Ron even noticed me acting like an extra on my bike.

As you can see, he was kind enough to stop and pose for me with a nice smile. I think he's just grabbed some grapes from the catering tent before climbing into a car that took him to the other set, two blocks away.
Actually, I don't even know if Ron went to the new location. Maybe a second-unit director took over for him.

The Intro ... The TV Truck ... The Crowd ... The Star ... ???

Letterman in S.F. . . . . . . Nash Bridges On Location