Some website put together a list of the best and worst celebrity fans for each NFL team . . . and they REALLY did their homework.
The site says, quote, "We tried to limit these to celebrities who have at least vowed to be loyal fans, rather than someone who just showed up for one game or picked a team to win the Super Bowl one time."
Obviously, their designations of which celebrities are the "best" and "worst" are totally subjective. But that's for YOU to debate. Here's the rundown:
The Arizona Cardinals. Best: Former "American Idol" winner Jordin Sparks. Worst: Blake Shelton. Others: Jimmy Eat World.
The Atlanta Falcons. Best: Samuel L. Jackson. Worst: Jeff Foxworthy. Others: Big Boi and 2 Chainz.
The Baltimore Ravens. Best: Edward Norton. Worst: Michael Phelps. Others: Actor Josh Charles, baseball legend Hank Aaron and Stacy Keibler.
The Buffalo Bills. Best: Toronto's train wreck mayor Rob Ford. Worst: Donald Trump.
The Carolina Panthers. Best: Brooklyn Decker. Worst: Ric Flair.
The Chicago Bears. Best: President Obama. Worst: Jim Belushi. Others: Bill Murray, Oprah, Vince Vaughn and Ashton Kutcher.
The Cincinnati Bengals. Best: George Clooney. Worst: Nick Lachey.
The Cleveland Browns. Best: Condoleezza Rice. Worst: Jerry "The King" Lawler. Others: Martin Mull and Brad Paisley.
The Dallas Cowboys. Best: "Stone Cold" Steve Austin. Worst: LeBron James. Others: Chris Christie, Jamie Foxx, Jenna Fischer, Kelly Clarkson, Grant Hill, Allen Iverson, Chris Rock, Clarence Thomas, Demi Lovato and George W. Bush.
The Denver Broncos. Best: "South Park" creators Trey Parker and Matt Stone. Worst: Roseanne Barr. Others: Don Cheadle.
The Detroit Lions. Best: "Twitter sensation" Karl Welzein, the guy behind the questionable handle, DadBoner. Worst: Kid Rock. Others: Eminem.
The Green Bay Packers. Best: Lil Wayne. Worst: Larry the Cable Guy.
The Houston Texans. Best: George H.W. Bush. Worst: George W. Bush. Others: Bun B, Dennis Quaid and Hilary Duff.
The Indianapolis Colts. Best: David Letterman. Worst: Jared from Subway. Others: Rob Lowe.
The Jacksonville Jaguars. Best: Comedian Lil Duval. Worst: Fred Durst.
The Kansas City Chiefs. Best: Comedian Rob Riggle. Worst: One-time "Idol" winner David Cook. Others: Paul Rudd.
The Miami Dolphins. Best: Serena Williams. Worst: Daniel Tosh.
The Minnesota Vikings. Best: Prince. Worst: Al Franken.
The New England Patriots. Best: Conan O'Brien. Worst: Mark Wahlberg. Others: Maria Menounos, John Krasinski, Matt Damon and Steven Tyler.
The New Orleans Saints. Best: Brad Pitt. Worst: Jimmy Buffett. Others: Harry Connick, Jr., Ellen DeGeneres and political analyst James Carville.
The New York Giants. Best: Sisters Rooney and Kate Mara. Worst: Lady Gaga. Others: Tracy Morgan, Daniel Radcliffe,Jon Bon Jovi, 50 Cent, Spike Lee and Brian Williams.
The New York Jets. Best: Denzel Washington. Worst: Adam Sandler. Others: Kevin James and Ray Romano, which are both also under the "worst" category.
The Oakland Raiders. Best: Ice Cube. Worst: Tiger Woods. Others: Tom Hanks, Metallica's James Hetfield, Larry King,Axl Rose and Jessica Alba.
The Philadelphia Eagles. Best: Tina Fey. Worst: Tara Reid. Others: Kobe Bryant, Will Smith, Bill Cosby, baseball star Mike Trout, Carrot Top, and Roots drummer Questlove.
The Pittsburgh Steelers. Best: Burt Reynolds. Worst: Rush Limbaugh. Others: Wiz Khalifa, Michael Keaton, Bret Michaels, former pitcher Curt Schilling, Seth Meyers, Jake Gyllenhaal and Hank Williams, Jr.
The San Diego Chargers. Best: Former MMA and UFC star Chuck Liddell. Worst: Golfer Phil Mickelson.
The San Francisco 49ers. Best: Actress Alison Brie from "Community". Worst: Chris Berman. Others: Robin Williams, ice skater Kristi Yamaguchi, and model Marisa Miller.
The Seattle Seahawks. Best: Joel McHale. Worst: Macklemore. Others: Sir-Mix-A-Lot, Rainn Wilson and Chrissy Teigen.
The St. Louis Rams. Best: Nelly. Worst: Sportswriter Peter King. Others: "Modern Family" star Ty Burrell.
The Tampa Bay Buccaneers. Best: Nick Carter. Worst: Dick Vitale.
The Tennessee Titans. Best: Faith Hill. Worst: Keith Urban.
The Washington Redskins. Best: Matthew McConaughey. Worst: Tom Cruise. Others: Kevin Durant, Dale Earnhardt Jr.,Bill Nye The Science Guy and Wale.