New York Giants
No, the Giants played in the Polo Grounds and Yankee Stadium
The Green Bay Packers play in the National Football League. The Giants (New York Giants) also are a team in the NFL.
Currently the New York Giants are a football team. There was also a New York Giants baseball team that moved to San Francisco in 1958.
No. In 2012, the Giants were not the best team.
The New York Giants used to play a College Football team in the preseason many years ago.
No, New Jersey doesn't have a football team. The NY Giants and Jets play in New Jersey, but they keep the name "New York..." Some people say that the Giants used to be the NJ Giants, but I haven't seen any proof.
Ten seasons - 1997-2006.