It really doesn't surprise me now that he produces such quality students.. I'm judging this off his 'Cesar Gracie Gi Less jiujitsu' dvd series; his instruction is so concise and clear, and he explains things so logically and thorough, though without overloading you with too much information - examples of this are how he pays attention to instructing where your weight is in the techniques, which is essential IMO.. Anybody ever train under him or attend a seminar of his? I'd be interested to know because I really rate him high after watching his instructionals (even his older instructionals he has a good ability to teach). Regardless of his own success, he's a great teacher.