Popular UFC front man Dana White is greeted by fans in Germany.
Dana White recalls his foray into Ultimate Fighting, and the phone call that changed the face of the sport forever.
Fans and controversy greet the UFC in Germany.
Brazilian Rorion Gracie traces the history of the UFC from his father's no- holds barred matches.
Rorion Gracie brought the concept of the UFC from his garage to arenas across the country, and came up with the idea of the Octagon.
Franklin takes us from the locker room to the intensity of the Octagon.
Fighter Rich "Ace" Franklin details what it's like to enter the Octagon.
Lorenzo Fertitta, remembers the origins of his love affair for mixed-martial arts.
CNBC Reporter