Steve, you have travelled the world seeking out great grilling and barbecuing traditions. In all your travels have you discovered a favorite dish or grilling tradition, or is that kind of like asking you to choose your favorite child?
You hit the nail on the head with your reference to "favorite child"! However, I've become very enamored the past few years of the grilling traditions of South America, inspired by uber talent Francis Mallmann. His book, Seven Fires (Workman, 2009), was revelatory. It inspired me to add a plancha (a kind of griddle) to my Best of Barbecue product line (see www.grilling4all.com).