Hands down, this one takes the cake:
Ronaldo “Jacare” Souza vs Roger Gracie at the 2004 Mundial. I can’t begin to describe the atmosphere at the Tijuca Tenis Clube, the location where the world championships of Brazilian Jiu Jitsu was held from 1996 until 2006. If you were there, you remember this match as well as I do.

Even though the crowd is noisy in the video, I’d swear that where I sat, everyone was silent immediately after the stunning submission attempt felt around the world. It was such a surreal feeling.