(Rosenthal, WTF? You made me dump my adrenaline with your sweet talk.)

When Shane Carwin went from the being on the brink of dominantly beating UFC heavyweight champ Brock Lesnar in the first round of their title tilt last Saturday night to feebly succumbing to an arm triangle choke in the second frame, many people were left wondering,"What the hell happened?"

Carwin, who originally claimed that his body locked up as a result of lactic acidosis, now says that his lack of energy to finish Lesnar was a result of a massive adrenaline dump, caused by the instruction of referee Josh Rosenthal. 

#5: Josh Rosenthal

(Nick Diaz vs. Thomas Denny @ EliteXC: Unfinished Business, 7/26/08)

With his trademark half-smirk during faceoffs and soft-spoken vibe, Josh Rosenthal brings some much-needed positive energy to the mean-muggin’ atmosphere of MMA. And though his stoppage in the first Chael Sonnen/Paulo Filho fight at WEC 31 drew controversy — in the eyes of Sonnen, at least — he’s one of those guys you rarely hear about because he just does his job in a quiet, dependable sort of way. Could 2009 be Rosenthal’s breakout year?

#4: Mario Yamasaki

(Tito Ortiz vs. Chuck Liddell 2 @ UFC 66, 12/30/06)

Mario Yamasaki fell into the referee gig when a UFC trip to Brazil (where Yamasaki was born) highlighted their need for another ref in addition to Big John McCarthy.  Since he was a lifelong martial arts enthusiast and jiu-jitsu expert, Yamasaki was a good fit.  His biggest problem as a ref might be that he looks a little too much like Steve Mazzagatti, and that can be a career-killer.  The difference is that Yamasaki gives fighters a chance to recover, but also knows when to stop a bout (despite maybe one or two notable exceptions, depending on who you ask), as he did when he mercifully ended the second Tito Ortiz-Chuck Liddell fight – a decision he was criticized for by Ortiz, and no one else.