On July 9th, 2006 in the World Cup 2006 Germany, Zidane and Materazzi were arguing. Materazzi insulted him "islamic terrorist" and then Zidane lost his temper and decided to do this...headbutt him on the chest. How sad...he won himself a red card for that..haha. He was out of the match and didnt get his metal when it was the award giving ceremony. Italy won cuz of zidane some say.
http://ggzidane.com/ ...What a shame for him..10,000 euros in debt for headbutting..