Rugby
We should really try to get rugby more recognized around here. I learned to play a few years ago from some guys who used to play professionally in South Africa and New Zealand. It's fast paced, there are no pads, and damn do you have to be quick. The games are 40 min halves. In football, if the ball touches the ground, the game is paused and plays are reset, in rugby, when the ball hits the ground, you pick it up and run your ass off before the opposing team lands on you like a grand piano. Good times for all.