But, as widely known as they are, they've struggled to compete at the highest level for quite some time now, failing to make the Super Bowl since 1995.
That's why their recent surge has been such a big story this season, as they finally look like a team that could make a deep run in the postseason.
Then again, they've also struggled to keep up with winning teams in the past, and that's a major concern as the regular season comes to an end. So, are they for real or not? Let's break it down.