Green Bay quarterback Aaron Rodgers walks off the field at halftime after leaving a game against Detroit with a concussion, Dec. 12, 2010. Gregory Shamus/Getty Images hide caption
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A diehard Green Bay Packers fan - or Cheesehead - gets ready to sport his green and gold at the NFC Conference Championship game against the Chicago Bears on January 23, 2011. The Packers won the game 21-14 to advance to Super Bowl XLV. CHRISTOPHER MACSURAK/flickr hide caption
Minnesota Vikings quarterback Brett Favre before the game against the New York Giants in Detroit on Monday. Rick Osentoski/AP hide caption