LiveScience.com - World Cup Science: Tricky Shots and Blind Referees

LiveScience.com - World Cup Science: Tricky Shots and Blind Referees: "Similar to how a billiards player puts English on a ball, a soccer player can influence a ball's spin by striking it in various spots. If done correctly, a spinning ball can bend like a banana around a wall of defensive players or float like a frustrating knuckleball towards the goal."