I would have to say its a tie between hendo vs Bisping and shogun vs machida 2. I watche TUF and I couldn't stand how Bisping was just always talking trash and Hendo wouldn't say anything. But i remember in one episode Hendo saying hell do the talking with his fist. I Absolutly loved the second unnecessary blow to the unconscious Bisping. Also, I was still infuriated at the time over Shogun vs Machida 1. What made things worse was that Machida actually thought he dominated the whole fight. Anderson even said machida won all 5 rounds. When I saw shogun drop and finish machida I jump out of my couch and starting yelling at the top of my lungs. It was amazing.