The Super Bowl XLII rematch and the (almost) undefeated season.
That's the storyline that will dominate for the next two weeks.
Tom Brady, Wes Welker and Bill Belichick are all certainly seeking revenge and some measure of redemption for their 17-14 loss to Eli Manning's Giants. They can't get the undefeated season back, but they can add to the franchise's dominance of the most recent era in professional football.
But the teams have also changed quite a bit in the last four years. 25 projected starters for this year weren't on the Super Bowl XLII rosters. How much will they be motivated by this young rivalry?
Here are the six biggest differences between the teams from Super Bowls XLVI and XLII.