To play or to watch? If it's to play it's tennis. If it's to watch it would be football and soccer. Watching tennis hurts my neck, and golf is too slow.
If it's to play, then I got nothin'. I don't play any sports at the moment. :/
If it's to watch, then I'd probably choose the last two minutes of a basketball game in the 4th quarter. There's not much more exciting in the way of sports.
I am not playing any sports at the moment but I have already played tennis, soccer, volleyball and basketball but I couldn't keep playing them because of a bunch of reasons. And I also like watching all of them and the American Football.