The moment you become a true soccer fan is the moment you first blame the ref for your team's loss. The 2010 World Cup may have been riddled with disallowed goals, award-winning dives, and petulant tantrums. But, for better or for worse, there has always been an ugly side to the beautiful game. And cry as you might for the introduction of video review, the errors and the fouls and the outrageous calls are what many fans remember most. Years from now, what will people point to as the most reprehensible act of the 2010 World Cup? We list the candidates below.