I realize there is a Semi-Rule change thread. More toward the kick off change rules. But I think the biggest rule change (for the AFC North at least
) is the "Hines Ward Rule".
Due to what happened to Bengals LB Keith Rivers, the NFL passed a rule that will not allow blindside block.
[media]http://www.youtube.com/watch?v=MWL8CcJjwRk&feature=player_embedded[/media]
Where you at Steeljake? Seems the NFL didn't think Hines Wards blocks were that great either.

NFLNT said:The initial force of a blindside block can't be delivered by a helmet, forearm or shoulder to an opponent's head or neck. An illegal blindside block will bring a 15-yard penalty.
Due to what happened to Bengals LB Keith Rivers, the NFL passed a rule that will not allow blindside block.
[media]http://www.youtube.com/watch?v=MWL8CcJjwRk&feature=player_embedded[/media]
Examiner.com said:He's one of the most feared receivers in the game because of his tenacity. He's a throwback to another era because of his linebacker mentality and now he has a rule to go with his name.
On Tuesday, the NFL adopted four new rules, including the 'Hines Ward' rule.Hines Ward
"As we go into these Competition Committee meetings we have Mike Pereira and his staff draw a number of plays that potentially could have been a foul," Rich McKay of the NFL competition committee said. "Particularly when we have an emphasis on something like these player helmet-to-helmet hits and that's been a big emphasis. So we said both on the defensive side and the offensive side, let's look at a bunch of hits."
A 15-yard penalty will be enforced if a player delivers a blindside block to the head of an opposing player using his helmet, forearm or shoulder.
"There were a lot of blocks that came into this one," McKay said. “We saw special teams hits where people were coming back towards the goal line and hit too high. We saw many blocks of receivers, and I saw the Hines Ward hit, all of which were legal blocks. I don't think we focused on Hines' block at all as the reason to change the rule.
" I think we focused on the fact that we didn't like, in certain situations, the fact that players, and that's why we used the word "blind side," players had no real opportunity to defend themselves and were getting hit helmet to helmet."
Asked if Ward's hit on Bengals linebacker Keith Rivers last year, that caused Rivers to break his jaw would be considered illegal this year, Ray Anderson, the NFL's executive vice president of football operations said it was debatable.
"Hines hit was perfectly legal last year, but as Rich said, the results of those types of hits, and there were several of them that we looked at, led to the conclusion that for player safety sake, we have to eliminate those types of blind side hits," Anderson said. "If you will, for the better of our players and our game going forward."
Two other rules that passed deal with kickoffs. One will prevent 'bunching' on onside kicks and another deals with the formation of a wedge by more than two players.
The final one is designed to protect defenseless receivers from all contact to the head area - from a defender's helmet, forearm or shoulder.
Where you at Steeljake? Seems the NFL didn't think Hines Wards blocks were that great either.