[ http://www.footballfanatics.com/ ]
Offers official merchandise and is an official retailer of the NFL, MLB, NBA and College game.
[ http://www.footballvideos.com/ ]
Mainly focuses on colleges and high school football and offers videos in this areas.
[ http://www.nfl.com/ ]
The official source for NFL news, video highlights, fantasy football, game-day coverage, schedules, stats, scores and more.
[ http://www.profootballhof.com/ ]
Offers the most complete history database of the NFL found on the web.