Tonight's Champions League match up between the Iberian super-powers will be hot! The 5th El Clasico of the season between Real Madrid and Barcelona FC, coming off a heated matchday 1 in the Champions League Semi-finals. Both teams have filed complaints about each other, so UEFA has called in one of the most recognized figures in world football. Pierluigi Collina the head of referees for UEFA will act as a official observer of the match. This man is a legend and hopefully will inspire a true classic between these two giants.