Gary B.
Indeed, he's a master craftsman no doubt. Another video that blew me away is knocking out an entire box using this method in 8 minutes (Below). It seems the inverse of Frank Klausz's method, but very similar. They both only use baselines, but Frank is pins first.

https://www.youtube.com/watch?v=14RSFkOmncs&index=1&list=PLkx4x7622sKtPJG17ulmjf6v11l_ww2-o

I like Sellers because he's more about the methods and skills than fancy tools.