When I think of sports I think of baseball first. Football is a strong runner-up. There's something about being present at a great baseball game that is magnificent. I got to go to the Stros/Braves 18 inning game last year, as well as WS Game 4 when the White Sox won it all. Great games, one ending in triumph and the other in defeat. It's almost poetic.
The two times I've been to a baseball game, they were more passive affairs. You weren't really involved in the game, and it just kind of played out. Of course, I was a kid, and they were both Marlins games.
I really want to attend a Dolphins game sometime.