Super Bowl Final Score 2012?

I was watching the Super Bowl last night and Brady and the Patriots where breaking records and destroying the Giants, and when the score was 17-9 my light went off. Now I see the final Super Bowl score and it's 21-17 Giants!! How did this happen? They're all talking about how Manning handled the pressure and stuff like that... Could someone explain me what I missed? What is the final score of the Super Bowl 2012?

The Super Bowl 2012 Final Score: The Giants won 21-17.
Well, you've just missed to see a huge unexpected comeback and a thrilling 4th quarter. One of the best Super Bowls in years, at least that's what the media is saying. Truth is, the Pats were a bad team; they core is prehistorically old, and the new members of the group are all rookies or sophomores. They had TWO good drives in the entire match that gave them the lead you mention; problem is their defense is awful, and Brady screwed it in the 4th. They had the ball up 2 with 10:00 remaining, he ran out the clock to 5:35, and had to punt away, just to see Eli score a TD and leave him 4 behind with 0:57 in the clock.