As far as the Giants/packers, I am rooting for the Packers. While the Giants are a classy organization, I have always rooted for Green bay in the NFC, and how can you not root for Favre.
As far as the patriots/Chargers, I am indifferent. Nothing good can from the game. Either the Patriots win, which for obvious reasons is bad, or they lose and I have to spend the next month listening to meathead former NFL announcers say things like “That is why they play the game,” then we get to spend the next six months psycho-analyzing why the Patriots did not win. As you can see, neither is a desirable outcome.