Dan Henderson - Greatest Fighter Ever
In my opinion Hendo is the best.
Pride Middleweight and Light Heavyweight Champ (Held both titles at the same time and was the last in Pride)
Strikeforce Light Heavyweight Champ
Dan has beaten "Shogun" Rua (Epic fight tonight!), Fedor Emilianenko, Babalu, Vitor Belfort, Wanderlei Silva, Rich Franklin, Bustamante, and no one will ever forget his destruction of Michael Bisping. He owned the first round against Anderson Silva and just got caught in the second with the submission. Sh*t happens but I feel Hendo could take him in a rematch. Hendo's gunning for the LH Title right now though so whether it's Jon Jones, Lyoto Machida, or Rashad Evans next watch the f*ck out.
I know some will argue for Anderson Silva or maybe George St. Pierre and rightfully so but I'll go with Henderson.