NFL is my favorite game by far now:
NFL - Mighty Buffalo Bills - I will always love Parramatta Eels, it is in my blood, however i think if i lived in the states i would be a more devoted fan to Buffalo - there supporters are absolute nutters though much like the Phili and Raiders fans - would kill any sports in terms of nutisism lol
College Football - University of Michigan - the fact that there colours are Blue and Gold just makes me love them more, and oh Tom Brady played with them so makes me love them even more
NBA - Bulls - always been my fav
EPL - Chelsea fan since the Zola days
I also like the Wanderers, Dortmund in soccer
Side note - cricket is shit, since waugh, warne etc retired it has become so f**king boring