I'd say Roy Stockwell. He pioneered breeding a lot of hard to breed reptiles and his passion for reptiles has spanned 20 years. Roy was one of the first breeders to produce CB Ball pythons in the late 80's and early 90's as well as working with a lot of rare or hard to breed/keep species. One of his more recent accomplishments was producing Schnider Skinks a couple years back and if memory serves on a handful of people have ever bred Schnider Skinks. For years he supplied Jamie Quick (USA) with numerous colour mutations of colubrids (one of which he originated, the vanishing patterned Honduran Milksnake) as well as numerous pythons and boas.