2008 Golden Foot winner Roberto Carlos' famous banana free-kick was the perfect goal, say scientists. The goal - considered as the best free-kick ever - scored during a tournament in France thirteen years ago was so outrageous many fans have questioned whether he really meant it. But physicists have finally laid the argument to rest by computing the trajectory and deciding it was all down to a phenomenon known as the 'spinning ball spiral'. This allowed the ball to divert inside the post at the last moment and bamboozle motionless French goalkeeper Fabien Barthez. (Photo: Getty Images)