Just saw this on Reddit - the NFL set up a part of their website where you can review three close plays from the week and see if you are as good as the real officials in deciding the call. Probably not fair if you know the actual play (the third play this week, for example, is the Charles fumble at the end of our game last week) but fun to play around with:
http://operations.nfl.com/the-offici...make-the-call/