After a career on Nickelodeon during his younger years, Thompson has moved onto bigger and better things.

A regular on SNL, he's a lifelong Falcons fan.

With the rise of Matt Ryan, hopefully he'll have something to cheer about soon.

The list isn't overly long for celeb fans of the Cardinals. It's not totally their fault. After all, the team used to play in St. Louis.

Yet Joe Maddon—a formidable force in Major League Baseball as Tampa Bay Rays manager—is a passionate Cardinals fan.

Though the Cardinals may lack the lustre of other, more illustrious teams, Maddon can sympathize, having remarkably turned around the hitherto-loser Rays.

One of the finest Olympians in the history of the Games calls the Ravens his team.

And when he was doing his thing in China in 2008, they were behind him.

He died too young, but that doesn't change the fact that he was a man all Buffalo fans were proud to have as one of them.

Even in the sometimes not-so-glamorous role of covering politics, Russert remained universally respected.

He might be gone, but he is certainly not forgotten.

OK, I have to admit, off the top of my head, I didn't know any celebrities who are Panther fans.

I know that might be hard to fathom, but it's true.

And frankly, after doing some searching, I didn't have too much luck. But in a number of random places, one of my favorite TV stars kept popping up. So Stephen, whether or not it's totally true, you get the nod here.

You shaved your head for the troops. You might have to do a little more than that to make Carolina a winner next year, though.

I had a few options here. But at the end of the day, why not go with someone known worldwide?

Mr. President is a pretty loyal Chicagoan and picked his Bears last year in the NFC title game, much to his own chagrin after the fact.

Still, that kind of loyalty doesn't go unnoticed, and the Bears could yet win a trophy while he's in the White House. 

With George Clooney, you generally know what you're going to get. In most of his movies, he plays the smooth, charming role. He has all the answers (Daniel Ocean?).

With the Cincinnati Bengals, not even the they know what they're going to get.

So not exactly a predictable match, but still a great one.

You might question her politics, but don't question her knowledge of the game.

She briefly entertained the notion of being NFL commish, and while that didn't work out, she's still got her Browns.

Steamin' Willie Beamen himself roots for the Boys.

He might have been pulling his hair out watching their play last year, but he could be smiling a little bit more this time around.

He might not rep them all over the place, but as a loyal Detroit man, he's in their camp.

Throw in those badass Chrysler commercials about his hometown (commercials that Ndamukong Suh also did), and that's usually enough to fire up local fans.

There's a number of celebs to choose from here, but why think too much?

My personal favorite Broncos reference on South Park was their opinion of Jay Cutler (then still a Bronco).

"My dad says you kind of suck, but you might be good someday."

Another man taken before his time. But another man who Packers fans were proud to call their own.

He was Wisconsin all the way through. 

Still one of the most polarizing Americans, former President Bush can never be doubted for how versed he is in sports.

A former owner of the Texas Rangers, he's quite the football fan, too.

The first man to break the speed of sound. That has to be one of the coolest distinctions that a person can hold.

And he's an unabashed fan of Peyton Mannng and the Colts. Before their Super Bowl win against the Bears, he was fully in their corner.

He liked to fly fast, and he likes his touchdowns to happen in the same way (a service Peyton usually delivers).

For his role in Hoosiers, Hackman will forever be enshrined as a sports-movie legend. And he gets points for being a Jags fan, since no one would accuse him of jumping on a bandwagon.

Not that the Jags have been horrible (in some seasons, they've been quite good), but Jacksonville is a young franchise.

Like the Chiefs, he's not always someone I think about right away (he flies under the radar from time to time).

But like his role in Knocked Up, or the 2010 Chiefs, he's sneaky good.

And yes, that's about all he has in common with Jamaal Charles. Still, not a bad celeb fan as they go.

As a part owner, she better be rooting for them!

And Dolphins fans are thanking their lucky stars (as long as a trophy follows soon).

Like the legions of fans in Minnesota, he's still waiting for a Super Bowl. But at least he won his election to be senator!

Quite the career for a man who was one of the original writers on SNL.

And as a loyal Vikings fan, he stays in touch with his roots.

Is he just the go-to for Boston celeb fans? Well, he isn't a bandwagon fan, that's for sure.

On top of his singing and acting career, he's an avid fan of anything Boston (being a Beantown native himself).

The Ragin' Cajun makes no mistake about which football team he's rooting for.

A New Orleans man without question, Carville and the Big Easy partied joyously when the Saints finally won the Super Bowl in February 2010.

Some might say there are better candidates for the celebrity Giants fan.

Frankly, I don't care.

Look at it this way: They could totally hire him as a coach and people would probably be excited (including the Jets).

Here's one where I don't really doubt the legitimacy of the celebrity knowing his team.

Ice Cube seems like the type of dude that lives and dies by the silver and black every Sunday.

In fact, he even made an ESPN "30 For 30" about the Raiders. Well played sir.

He grew up in Philadelphia, and even though the Eagles always seem to come up a little short (something the Fresh Prince isn't accustomed to), he's stood by them.

Who knows, now that Mike Vick's in town, they could do him proud sooner rather than later.

Despite growing up in California, Snoop has never made a big secret out of the fact that he loves the Steelers.

Watching the Steel Curtain as a child made an impression on the rap star. And he's never forgotten it.

One of the most famous UFC fighters of all time, Liddell loves the Chargers.

He's even been rumored to tailgate from time to time.

(I thought about putting Arnold here, but too soon maybe?)

My guess is that he wasn't a fan before Joe Montana and Bill Walsh rolled into town in the 80s.

But who knows, maybe he's a diehard? Not a bad celeb fan, though. Just look at his IMDB page.

He's the best I could do! Their owner and former co-founder of Microsoft, he's kind of famous, right?

As anyone knows from having seen his music videos, the dude loves his hometown.

And he reps their gear (in varying flashy ways) all the time.

A fan of the Rays as well, Dickie V supports his Tampa teams.

He's clearly passionate for a winner (or anything for that matter).

Maybe Josh Freeman will give him (and Bucs nation) something to cheer about again soon.

Hill is rapidly becoming a fixture for Sunday Night Football. But while she may sing about other teams, only Tennessee gets her true affection.

Apparently, her entire family is the same way.