Actor Will Ferrell helps get the crowd to sing "Roll Out The Barrel" during the second half of an NFL football game between the Green Bay Packers and the Detroit Lions Sunday, Dec. 9, 2012, in Green Bay, Wis. (AP Photo/Morry Gash)

Associated Press
Actor Will Ferrell helps get the crowd to sing "Roll Out The Barrel" during the second half of an NFL football game between the Green Bay Packers and the Detroit Lions Sunday, Dec. 9, 2012, in Green Bay, Wis. (AP Photo/Morry Gash)
Actor Will Ferrell helps get the crowd to sing "Roll Out The Barrel" during the second half of an NFL football game between the Green Bay Packers and the Detroit Lions Sunday, Dec. 9, 2012, in Green Bay, Wis. (AP Photo/Morry Gash)
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