Thanks for posting this Jim, it was very inspiring. I watched it right after you posted it yesterday, and meant to come back and comment - but got distracted. I agree with you, he is a master at making the flash seem natural.
That was absolutely fascinating and like others have said, I hated for it to end! I could easily have watched and listened for another hour or longer..... Very cool video, very intriguing the approaches he takes to his subjects!
I have followed him for a while, very creative guy. His photography book on Tropical Nature Photography is a pretty good read. I'm not sure I actually learned anything- but he did pull loose ends together pretty well. It is a book I will re read some day.