Football
All American Football League - http://www.allamericanfootballleague.com/
A for-profit professional football league that takes the traditions, passion and pageantry of college football to the level of a major American professional sports league.
British Universities American Football League - http://www.buafl.net/
The largest university competition for American football in Europe.
Football Links Directory - http://nfllinks.wordpress.com/
One place to find all links NFL related.
Great American Football League - http://greatamericanfootballleague.com/
A professional football league. Includes information about the sport and forums.