Brett Favre retiring as a Green Bay Packer in March 2008, only to un-retire a few months later to join the New York Jets, and then join the Packers' rival, the Minnesota Vikings, in 2009.
Overview：Brett Favre retiring as a Green Bay Packer in March 2008, only to un-retire a few months later to join the New York Jets, and then join the Packers' rival, the Minnesota Vikings, in 2009.
