5. Nick Diaz vs. Takanori Gomi
So first there is the fight, a non-title bout between two premiere lightweights. While Gomi seemed off his game, he made it a contest until Diaz trapped him in only the second successful Gogoplata submission in Pride history. But then there was the aftermath, when it was revealed that Diaz's THC levels were through the roof prior to the fight, and it was alleged he had partaken of some herb in order to numb the pain he was set to endure. As rare as a Gogoplata is, calling weed a performance enhancing drug is even less common.