The Bears making a rushing play in the end zone against the Patriots during Super Bowl XX.
Whenever a team time out is called after the two-minute warning of each half or overtime, it should only last a minute instead of 90 seconds.
A play is immediately dead anytime the quarterback performs a kneel-down (the quarterback immediately kneels down after receiving the snap) after the two-minute warning of each half, or whenever the player declares himself down by sliding feet first on the ground. The ball is then spotted at the point where the player touches the ground first.
Both "Roughing the kicker" and "Running into the kicker" fouls are not to be called if the defensive player was blocked into the kicker.
The definition of a valid fair catch signal is clearly defined as one arm that is fully extended above the head and waved from side to side.
Goaltending (leaping up to deflect a kick as it passes through the goal posts) is illegal.
The officials' uniform changed slightly. Instead of wearing black stirrups with white stripes over white sanitary hose, the officials began wearing a one-piece sock similar to those worn by players, black with white stripes on top and solid white on the bottom.
Defensive backs were ruled to have an "equal right to the ball", meaning that pass interference would not be called if the defensive player was looking back attempting to intercept the ball, and that any contact with the receiver did not materially affect the receiver's ability to catch the ball.