The Green Bay Packers - "a community project... to promote community welfare..." (GB Packers bylaws)

The Green Bay Packers are the only fan owned professional sports team (unfortunately, in an ideal world, they all would be, and the days of teams taking off for a new city, and a free stadium, would be over). The New Rules Project has a fascinating history of how this came to be, and the impact on the community of Green Bay (actually a small town, that otherwise would have been deserted by its team long ago).