Part of the thrill of sports is the wonder and mystique surrounding the underdog.
I know it sounds corny, cliché and something right out of a movie, but there really is something fascinating about watching a team not expected to do much overachieve.
It must be the way every member of those teams seems to reach beyond himself for the greater good, that the whole can sometimes be greater than the sum of its parts.
An overachieving team can uplift a city and a fanbase, and it can be a powerful feeling.
In football and in the NFL, there always seems to be one team every year that proves all the doubters wrong and makes a nice season of it. Most times, it's a quick playoff exit. But other times, the underdog can make an amazing run and even end up winning the ultimate prize.
With the playoffs not that far off, here are some of the more unlikely playoff teams in NFL history.