Metric football (soccer) comes in third, behind hockey.
I can watch basketball, but watching baseball on TV is grueling. That's definitely a sport of atmosphere. In the park, wide open field, hot dogs (natural casing), cold beverage of choice, and watching a game play out in front of you. That's the only way to watch baseball.
Baseball .... go Yanks! *hides* I'd like to go see a baseball game in person, I would love to visit all the old stadiums - Chicago, B-Town and of course Yankee Stadium. But I like the entire fact that I can be a vocal fan though - as you know Yankee fans make their opinions be known - "hey Jeter try hitting a ball!"