I had the luxury of training with these two champions privately. They showed me a bunch of great moves which I can definitely add to my game. The seminar was just as informative and insightful. Having to spend lots of time with them, I managed to get tons of information which would help me my understanding of BJJ.
Andre Galvao (Current Pans Ams Champion 2008 for his weight and absolute category) 
Eduardo Telles (Mutiple Brazilian Jiu Jitsu Champion from Brazil) Famous for his Turtle position and Octopus Guard