Mikhail Youzhny lost in three sets to Tommy Haas in the fourth round of the French Open yesterday and he wasn't very happy with his performance.
After going three games down in the second set, he completely lost it and smashed his racquet to pieces, sending ball boys scurrying to pick up the bits.
http://www.youtube.com/watch?feature=player_embedded&v=wrgKTYIvWCo
He also has previous from several years back.