EASILY without a doubt #1, mr swag himself: Adrien "the problem" Broner other contenders: Choi Tseveenpurev Ricardo Mayorga Vic Darchinyan Kevin Johnson (bum of a fighter but hilarious and charismatic) Jorge Arce Antonio Tarver
Unfortunately, there is no truly charismatic boxer out there right now. Pacquiao probably comes the closest, due to his nice-guy image and the inspirational "small guy beating up bigger guys" angle that he's been built up with, but to me, he just lacks a little of that magnetism guys like Tyson, Ali, SRL, and DLH had. Mayweather, while the sport's biggest earner, is not all that charismatic. The Klitschko brothers are nice, articulate guys and very good fighters, but they also don't seem to have that personal magnetism that would allow them to be called charismatic. If Sergio Martinez was younger and fought more often, he could probably have a shot at being considered charismatic. Too bad he's already 36.