I used to list football as my #1, but with all the stuff coming up recently about the sort of post-career problems these guys are having, and the whole Saints pay-per-hit thing, I'm kinda getting turned off to it. Id say baseball, rugby and cricket are all vying for the #1 spot. I like baseball more than the other two for the moment, mostly for nostalgia. About rugby, you'd think soccer/foot would be the big thing for everybody around here, but because of the hooliganism and general attitude of the fans, most 'family' types are flocking to rugby. Everybody has a good time, eats good food, doesn't start fights.
Weaz a big reason for liking baseball is that you don't have to stay glued to the tv to see everything. It's even better over the radio.