Just in case you're not aware, you can still watch a lot of the game at NFL.com at: http://www.nfl.com/live?icampaign=dw...
I watched the Colts game on Thanksgiving on NFL.com and was surprised how much coverage there was. It's basically a studio show where they cut in to live looks during the game. They showed at least 70% of the game (live) which included all of the red-zone drives and a lot of complete drives.
They also showed any important replays that happened during the studio show. Overall I was really impressed with the coverage and the quality and bandwidth was great.
On NFL.com they make it sounds like limited coverage and just a few live looks. That wasn't the case but I don't think they want to promote the game on the web much because it defeats the whole purpose of the NFL Network
NOTE: At game time, the live page will have a button to go to the game (that button will not be there till the game starts). Make sure you bypass or turn off your pop-up blocker when you hit that button. If you don't it will only load a play by play page but the video window will not pop-up and you don't usually get a warning that the pop-up was blocked.