Loyal Denver fans cheer as the Broncos host the Raiders, Sept. 30, 2012, in Denver. (AP Photo/David Zalubowski)

Saints fans at the Mercedes-Benz Superdome in New Orleans, as their team take on the Chargers, Oct. 7, 2012. (AP Photo/Bill Feig)

A hair-raising sight as Dolphins fans watch their team play the Cardinals, Sept. 30, 2012, in Glendale, Ariz. (AP Photo/Ross D. Franklin)

Raiders fans put on their game face against the Steelers in Oakland, Calif., Sept. 23, 2012. (AP Photo/Tony Avelar)

Seahawks fans looks on during a game against the Rams, Sept. 30, 2012 in St. Louis. (AP Photo/Tom Gannam)

Chiefs fans are fired up as their team take on the Chargers, Sept. 30, 2012, in Kansas City, Mo. (AP Photo/Colin E Braley)

Vikings fans look on during a game against the Titans, Oct. 7, 2012, in Minneapolis. (AP Photo/Genevieve Ross)

Seahawks fans watch their team warm up before a game against the Panthers in Charlotte, N.C., Oct. 7, 2012. (AP Photo/Bob Leverone)

Cheesehead waits outside Lambeau field before a game between the Packers and Saints, Sept. 30, 2012 in Green Bay, Wis. (AP Photo/Jeffrey Phelps)

Pittsburgh fans wearing pink beards and holding pink Terrible Towels cheer during a game between the Steelers and Eagles in Pittsburgh, Oct. 7, 2012. Fans and the teams of the NFL are wearing and displaying pink to help bring attention to breast cancer. (AP Photo/Gene J. Puskar)

Green Bay Packers fans watch a game against the Colts in Indianapolis, Oct. 7, 2012. (AP Photo/Michael Conroy)

Texans fans put a spell on the Titans, Sept. 30, 2012, in Houston. (AP Photo/Dave Einsel)