Sports
The national sport in the US is Football. Of course I'm not talking about the football we're use to play in Europe, which is called "soccer" there, but the American Football much more ... violent. It could be related to a mix of the European rugby and football (soccer).
There are also other sports very popular in there such as Basketball, Baseball and Swimming.
This is one of the best Basketball team of the United States: "The Lakers" of LA.
This is a player of the Yankees, and the Yankee Stadium in New York. It is a very famous team in the Land Beyond the Pond.
Here is the nation's swimming hero, Michael Phelps, he's won many olympic medals.
My opinion
I like American sports because they are far different from the European ones, and I think that contributes to the American dream.