Celebrities are not immune to the energy surrounding professional sports, and as a result, all 32 NFL teams have a claim-to-fame fan to call their own.
Some fans are famous strictly for being fans, while others have achieved their high profile status through other means and just happen to be NFL supporters.
From Bradley Cooper to Fireman Ed, the following are each NFL team's most famous fan.
It's only appropriate that the most hated player in the NBA is a fan of the most hated NFL team.
LeBron James often tweets during the games, and he even got a shout out from Dez Bryant, who paid homage to the King's pregame routine by imitating LeBron's chalk throw.
Naturally, James is also often spotted in a Yankee cap.
You're a Super Bowl champion, Harry!
Radcliffe had so much faith in his underdog team this season that he bet Ellen DeGeneres $5,000 that the Giants would win Super Bowl XLVI.
Bradley Cooper was born in the city of brotherly love, and he takes pride in rooting for his hometown Eagles.
The Hangover star's fandom runs deep. Cooper has been spotted at Lincoln Financial Field during games and will play a starring role as an Eagles fan in The Silver Linings Playbook, set to hit theaters in November 2012.
He even was called out by New York Giants wideout Victor Cruz, who noted that Cooper had good style, "but he's an Eagles fan."
Throughout his life, the NASCAR driver has remained an avid Skins fan. He even admits to receiving score updates during races.
Earnhardt Jr. has always remained hopeful for his Redskins team, even in their darkest hour (or their constant midnight, really).
The loyal fan is looking forward to the upcoming season and is revved up for RG3's D.C. debut.
While it's not clear that Justin Bieber and girlfriend Selena Gomez are die-hard Falcons fans, they were spotted donning Falcons gear and cheering on the home team last fall.
Well known Atlanta fan Usher hosted the celebrity couple.
Usher, who had a big influence on Justin Bieber's career, would perhaps have the best luck persuading the Canadian native to root full-time for the southern team.
Made famous by her appearance on the cover of Sports Illustrated's 2010 swimsuit edition, Brooklyn Decker has since gained roles in full-length films.
But despite her widespread fame, she still enjoys sitting down to talk Carolina Panthers football.
Moneyball was not Brad Pitt's first foray into sports. The actor supports the Saints and the city of New Orleans.
Pitt even narrated NFL Network's film on the Super Bowl champion Saints team.
Legendary sportscaster Dick Vitale is a Tampa Bay Buccaneers season ticket holder and a loyal fan.
Dickie V is vocal about his support, often taking to Twitter to cheer on his team, taunt opponents or vent his frustration:
@petethamelnytPete I am crushed what happened to the Kelly deal with the Bucs? Don't want a re-thread! HELP US— Dick Vitale (@DickieV) January 23, 2012
The 44th President of the United States has been active in the world of sports since taking office.
Obama has attended games, invited championship teams to the White House and even traveled to Copenhagen in an attempt to persuade the International Olympic Committee that Chicago should be the site of the 2016 Games.
But as far as sports affiliations go, Obama is most known for his unwavering loyalty to the Chicago Bears.
When it comes to Detroit, people always think of Eminem as the city's No. 1 fan.
And while Marshall Mathers certainly does represent all things Motor City, in a recent interview with GQ he admitted to doubling as a Cowboys fan and also said that, "the Steelers are one of [his] favorite teams," so I decided to give Kid Rock some cred for his loyal support of the Lions.
Kid Rock was born in Romeo, Michigan, part of the greater Detroit metropolitan area, and the singer has nothing but pride in his native city.
Lil Wayne showed some Green Bay love when the Packers were headed to Super Bowl XLV, recording Green and Yellow a knockoff of Wiz Khalifa's Black and Yellow.
After the victory, Lil Wayne fist-pumped the team's success on Twitter:
Green and Yellow! Green and f#%kin Yellow!— Lil Wayne WEEZY F (@LilTunechi) February 7, 2011
He then went out to celebrate the win with Floyd Mayweather and Drake.
Al Franken has quite the brimming resume.
Franken became famous as a comedian and for his long-time role as an SNL cast member. He is currently a U.S. Senator (D-MN) and he can draw a free-hand map of the United States.
But he would love to add "Super Bowl Champs" to that list.
The members of Jimmy Eat World hail from Mesa, Arizona, and all of them are Cardinals fans.
But drummer Zach Lind took that Arizona love to a whole other level, penning the occasional blog entry for ESPN.com.
His first post sums up the trials and tribulations of Cards fans quite aptly and is entitled "Eternal hope, angst of a Cardinals fan."
Robin Williams at a San Francisco Giants Game
Carey has been seen around the Hawk's Nest a great deal. He even hoisted up the 12th Man Flag before a Seahawks-49ers game. The flag is a tribute to Seattle's loyal fans.
If only the hip-hop artist's 2001 track Number One could become the anthem for the St. Louis Rams.
Nelly spent his childhood in St. Louis, where he established an undying love for the team. He has been a faithful fan ever since.
Not only is Mark Wahlberg's hip-hop alias ("Marky Mark") the best name to say in a Boston accent, but the rapper turned actor is a devoted New England Patriots fan.
Wahlberg hosted a Super Bowl party this winter, and when his beloved Pats lost, he behaved like any passionate, hot-headed fan would by kicking out all of his guests.
Wahlberg then directed his rage toward his wife, who has since banned all further Super Bowl parties at the house—the next time the Pats make it, of course.
Ed Anzalone, better known as Fireman Ed, has been celebrating Jets wins for almost four decades.
Ed worked as a firefighter in Harlem, but was injured on the job in 2007.
He is unequivocally the most well-known NFL fan of any team and was even inducted into the Hall of Fans in the Pro Football Hall of Fame in 1998.
Lizzy McGuire is a Houston, Texas native and an avid Texans fan. She has sang the national anthem at a number of Texans home games.
Lowe's relationship with Irsay took an interesting twist this January, however, when the Parks and Recreation star took to Twitter to announce:
— Rob Lowe (@RobLowe) January 18, 2012
— Rob Lowe (@RobLowe) January 18, 2012
The tweets sent the sports world ablaze with speculation that Irsay himself had offered the information to Lowe. But Irsay got the last laugh, mocking Lowe's bad information:
My sources tell me Rob will star in an epic remake of "Deep Throat" with aging porn stars and 4 finger circus clowns!
— Jim Irsay (@JimIrsay) January 18, 2012
Philadelphia Phillies relief pitcher Jonathan Papelbon is a monster Jags fan.
Papelbon attended high school in Jacksonville, Florida and has been spotted in EverBank field cheering for the Jaguars.
Now the most decorated Olympian in history, Michael Phelps still keeps Baltimore close to his heart.
The athlete is such a huge Ravens fan, that during the 2008 Olympics in Beijing, he was as excited to receive a custom jersey from the team as he was to win a gold medal after a relay race.
George Clooney is someone who seemingly has it all. He's one of those guys you often look at, scratch your head and proclaim, "he must be compensating for something."
It isn't too hard to figure out what: Clooney has spent his life as a plagued but proud Cincinnati Bengals fan.
As if it wasn't enough to watch his beloved Bengals go 0-2 in Super Bowls during his lifetime, Clooney has also been dating Stacy Keibler, an avid Ravens fan, since 2011.
A tortured man lives behind that suave outer shell, and all this time, we thought he was perfect.
Former U.S. Secretary of State and potential Republican vice presidential nominee Condoleezza Rice is no stranger to football.
Despite her high-profile career in politics, Rice admitted to the New York Times in 2002 that her dream job is to be NFL commissioner.
Born in the south without an NFL team to root for, Rice began cheering for the Browns with her father during the Jim Brown era, and she has been a lifelong fan since.
You know what it is!
Wiz Khalifa is so passionate about the Terrible Towels that he penned an ode to them.
"Black and Yellow" hit #1 on the Billboard Hot 100 and is so catchy that even Ravens fans have no choice but to sing along when it plays.
South Park creators Trey Parker and Matt Stone have done some serious grunt work to keep the Denver Broncos culturally relevant through the team's struggling years.
Parker and Stone don't hesitate to write endless Broncos shoutouts into their hilarious cartoon creation with a consistency that reflects only a true fan's commitment.
The pair have even showcased their Denver love on NFL Network.
Monte Short is a land developer by day, but on Sunday afternoons, he slips into the garb for which he is famous, and transforms into Kansas City's Arrowman.
Each week, Short chooses an opponent's jersey to demolish by gluing K.C. arrows into it. giving the impression that the competition has been viciously wounded by the Chiefs.
Short explains how his role developed,"It was an off-the-wall thing that I thought I'd do just once, but then the fans in my section booed me when I returned as a regular fan."
Now Short has become a staple in Kansas City fandom.
Ice Cube and N.W.A. began to define the Los Angeles hip hop scene in the mid 1980s—shortly after the Oakland Raiders moved from Oakland to L.A.
In Ice Cube's installment of ESPN's 30 for 30 series, he explains that N.W.A. felt a connection with the rough-around-the-edges Raiders.
The group decided to pay homage to their favorite football team by donning their gear, which consequently led the Oakland Raiders to become emblematic of the emerging L.A. hip hop scene.
Ice Cube is a Raiders fan for life.
Actually, he doesn't just cheer, he screams his lungs out.
Mickelson spilled to Golf Digest, "I do love the Chargers. I've rooted for them since I was a kid and go to as many games as I can. At their playoff game against Indianapolis in January, I lost my voice cheering for them."
It's good to see a golfer let loose.