Wouldn't it be fun if the World Cup games used a nice 'classic' black and white ball instead of that weird plastic-y Jabulani ball? I saw a "how it's made" type program about balls and they mentioned that the black and white ball was made so that the ball was visible when a game was played on a black and white tv. Previously, the balls were just one color (brown, i think) and it would just blend into the color of the pitch.
The hexagon ball is so iconic... immediately recognized for soccer and not, some other sports ball. Bring back the classic!