I really enjoy Football Outsiders. They're the best sports analytical site I've found, and their annual almanac is always enjoyable and informative. They also have regular content updates on their site (duh), but this was a particularly enjoyable read.
Mike Tanier is probably my favorite writer for them. He did several chapters in the FO Almanac, including the NFCS teams. The chapter he wrote on Atlanta is one of the best chapters I've read of any book, blending information and entertainment wonderfully. Most of his stuff is "information" with a sprinkling of "entertainment." This article is more the other way around.
When blogger Billy Rios discovered a glitch in the ESPN Fantasy Football site that made it easy to make changes to his opponent's roster, he tested his ability to hack the system by making a fellow owner pick up Grossman. Hilarious. It's like making the computer in "WarGames" start a global thermonuclear war, only worse because it's Grossman.