I recently joined nfl.com as a FE dev; I see a lot of 404s on Game Center data feeds. The feeds are being requested past the end of the data (the feed tells you where to look for new data until last feed returns 200 with no data - beyond that it's a 404). Not sure how to reduce the 404s, suppose we could document the feeds and make them openly available. Hmm.

I like finding projects in the wild that do creative things with nfl.com data. This guy is building an Arduino Fantasy Football trophy: https://github.com/sambrenner/future-trophy And this person built an OSX app using score strip XML for current scores: https://github.com/kchau/NFL-Menu