Die-hard football fans both NFL, college show their team spirit.
Chicago Bears fans go retro with their best Mike Ditka (circa 1986) impression during a game against the Tennessee Titans on Nov. 4. (Brian Cassella/Chicago Tribune)
New Orleans Saints (Tom Hauck/Getty)
Miami Hurricanes (Joel Auerbach/Getty)
Oakland Raiders (Stephen Dunn/Getty)
Chicago Bears (Jim Young/Reuters)
Miami Dolphins (Al Messerschmidt/Getty)
Jacksonville Jaguars (Sam Greenwood/Getty)
Miami Hurricanes (Mike Ehrmann/Getty)
Tampa Bay Buccaneers (Grant Halverson/Getty)
St. Louis Rams (Scott Boehm/Getty)
Washington Redskins (Scott Cunningham/Getty)
New Orleans Saints (Wesley Hitt/Getty)
Cincinnati Bengals (Larry French/Getty)
Florida State University Seminoles (Al Messerschmidt/Getty)
Houston Cougars (Thomas B. Shea/Getty)
Virginia Tech Hokies (Scott Cunningham/Getty)
New England Patriots (Matthew J. Lee/Getty)
Denver Broncos (Doug Pensinger/Getty)
Green Bay Packers (Joe Robbins/Getty)
Oakland Raiders (Brian Bahr/Getty)
New York Jets (Jim McIsaac/Getty)
Cincinnati Bengals (Joe Robbins/Getty)
Oakland Raiders (Brian Bahr/Getty)
San Francisco 49ers (Rob Carr/Getty)
Baltimore Ravens (Rob Carr/Getty)
New Orleans Saints (Wesley Hitt/Getty)
Virginia Tech Hokies (Geoff Burke/Getty)
Oakland Raiders (Mike Blake/Reuters)
Denver Broncos (Doug Pensinger/Getty)
Georgia Tech Yellow Jackets (Joe Robbins/Getty)
Boise State Broncos (Ethan Miller/Getty)
Atlanta Falcons (Scott Cunningham/Getty)
Virginia Cavaliers (Geoff Burke/Getty)
Miami Dolphins (Mike Ehrmann/Getty)
Arkansas Razorbacks (Wesley Hitt/Getty)
Minnesota Vikings (Kevin C. Cox/Getty)
Cleveland Browns (Matt Sullivan/Getty)
Oakland Raiders (Paul Hackett/Reuters)
New York Jets (Ray Stubblebine/Reuters)
Georgia Bulldogs (Joe Robbins/Getty)
Cleveland Browns (Matt Sullivan/Getty)
Oakland Raiders (Stephen Dunn/Getty)
Detroit Lions (Rebecca Coo/Reuters)
Houston Texans (Sam Greenwood/Getty)
Philadelphia Eagles (Scott Cunningham/Getty)
Washington Redskins (Scott Cunningham/Getty)
Houston Cougars (Thomas B. Shea/Getty)
Buffalo Bills (Rick Stewart/Getty)
Indianapolis Colts (Joe Robbins/Getty)
Boise State Broncos (Ethan Miller/Getty)
Kansas City Chiefs (Jamie Squire/Getty)
Kansas City Chiefs (Jamie Squire/Getty)
Miami Hurricanes (Joel Auerbach/Getty)
San Diego Chargers (Tom Hauck/Getty)
Philadelpia Eagles (Rich Schultz/Getty)
Tennessee Titans (Joe Robbins/Getty)
Terrible costume (Photo by Karl Walter/Getty Images)
Playing football against Rex Ryan’s Jets (Photo by Jonathan Daniel/Getty Images)
Ravens flock (Photo by Larry French/Getty Images)
Indy vision (Photo by Andy Lyons/Getty Images)
Eagle-man (Photo by Chris Trotman/Getty Images)
Eagle-man (Photo by Chris Trotman/Getty Images)
El bandito (Photo by Otto Greule Jr/Getty Images)
Matty ice ice baby (Photo by Scott Halleran/Getty Images)
Little boy blueberry (Photo by Andy Lyons/Getty Images)
Zebra stripes (Photo by Donald Miralle/Getty Images)
Gorilla tactics (Photo by Sam Greenwood/Getty Images)
Blue Fu Manchu (Photo by Kevork Djansezian/Getty Images)
Jets head (Photo by Jeff Zelevansky/Getty Images)
Straight pimpin’ (Photo by Larry French/Getty Images)
Bear hair (Photo by Stephen Dunn/Getty Images)
Little baby bear (Photo by Jonathan Daniel/Getty Images)
Saint face (Photo by Jonathan Ferrey/Getty Images)
Pat head (Photo by Harry How/Getty Images)
Ring leaders (Photo by Larry French/Getty Images)
Why so serious? (Photo by Matthew Sharpe/Getty Images)
Mauling the opponents (Photo by Scott Halleran/Getty Images)
Ravenous (Photo by Larry French/Getty Images))
Impaled by hair (Photo by Otto Greule Jr/Getty Images)
Cheesy (Photo by Jim Rogash/Getty Images)
Sound the horns (Photo by Doug Pensinger/Getty Images)
Old man at Arrowhead (Photo by Jamie Squire/Getty Images)
Colts camouflage (Photo by Andy Lyons/Getty Images)
Helmet to helmet (Photo by Streeter Lecka/Getty Images)
Helmet to helmet (Photo by Streeter Lecka/Getty Images)
Tomahawk chop (Photo by Larry French/Getty Images)
Seattle flock (Photo by Otto Greule Jr/Getty Images)
Phantom of Qwest Field (Photo by Otto Greule Jr/Getty Images)
Swallow the whistle (Photo by Otto Greule Jr/Getty Images)
Spike (Photo by Sam Greenwood/Getty Images)
Silver and black bandit (Photo by Sam Greenwood/Getty Images)
Super 9er (Photo by Christian Petersen/Getty Images)
