So far the 2008-2009 season has been a thrilling one that has seen some incredible developments. Last year the Giants stunned the sports world with their win over the 17-0 New England Patriots. With Tom Brady out all season with a leg injury, the NFL has seen a number of teams rise to the top while others have faltered. This season features so many teams that have a chance of winning it all that it should make for exciting viewing. Let's run down a list of the main contenders:1. Tennessee Titans (Tickets)
The Tennessee Titans have stunned the NFL world with a dominating season that has seen them become the team to beat. They have a crushing defense that limits opponents scoring and are also able to score a variety of ways.2. New York Giants (Tickets)
The defending champions have to be favorites to repeat. The core of their team will remain, and they now have the belief necessary to carry their regular season form into the playoffs.3. Pittsburgh Steelers (Tickets)
The Pittsburgh Steelers as always feature a devastating defense that is always tough for the opposition to score against. And with Big Ben throwing the pigskin, its always a long day for whoever is playing the Steelers.4. Washington Redskins (Tickets)
QB Jason Campbell has been one of the most reliable quarterback in the game all year. Look for the 'Skins to continue their unexpected dominance the back of this star QB.5. Dallas Cowboys (Tickets)
While its been a trying season for Dallas, they still have the talent to put together a run at the end of the season. You can bet that this team of champions won't be going quietly.