BJ Penn, Rickson Gracie, Royce Gracie, Rorion Gracie, Randy Couture, Dan Henderson, Kevin Randleman, John Fitch, Frank Mir, Urijah Faber, John Hess, James Irvin, Jeff Monson, Xandre Ribeiro, Vinicius Magalhaes, Bas Rutten and a few others as the list is long.
Two more worth noting.
The most devastating and the most incredible fighter I have ever rolled with is Anawatazi. He, as Rickson Gracie said, is the most technical, coldest fighter Rickson had ever seen. Two bad he had that little incident with Sakikabara or more would know who he is.
And the most colossal prick award has to go to the late Ryan Gracie. He is without a doubt the biggest prick I have ever rolled with. No manners, no class and no mercy signify him. A douchebag of biblical proportions.