Around the world, the sport is known as Fútbol. In the USA, we call it soccer. Are there any soccer fans here besides me?
I'll start. I've been a LA Galaxy fan long before Beckham made it cool.
At World Cup time, I root for the rapidly improving 
Team USA.
Next!
Trivia: The crowd participation act known as 'The Wave' originated at World Cup '86 in Mexico.