I don't think it has been mentioned here, but for me, an absolutely vital 'moment' (or three) was the 3-and-out drive that the Pats D put on the Seahawks when Seattle got the ball at just under the 8 minute mark of the fourth.
This was the Lockette trip, Lynch for 4+, and the ugly incomplete floater directed to Lynch.
This was an enormous moment in the game because it was exactly the moment where you fear that a good offense that can run the ball, there with a three point lead, will simply create one of these soul crushing, clock eating drives where even if the drive stalls out you still fear a field goal and six minutes eaten off the clock. Had they done that the Pats would have been in a monumentally harder spot.
It was enormous, and it is also a good example of the many ways the Pats did not get 'lucky' but won a game that unfolded inside of sixty minutes of playing (and on measure, I'd argue that the luck went far more for Seattle anyway).