The NFL has totally overcomplicated the game with its multitude of new rules. You can watch games where you will have flags on 5 or 6 consecutive plays! The biggest problem for me is pass interference. Gruden says this all the time on MNF, and I wholeheartedly agree, that pass interference should be OBVIOUS. For instance, Browner interfering with Louis Murphy in the endzone last week. Where the defender actually contacts and disrupts the other player’s ability to catch the ball. Guys touch each other on every play, doesn’t mean it is interference. For instance, last week VJax was called for OPI in the endzone. His had was on the guy, but if you watch it, there is no way he pushed the defender or interfered with his ability to make a play. Guy was out of position and it was a perfect pass.The problem is that the refs focus on these so called "points of emphasis" that result in these highly technical calls that are inconsistently applied. My least favorite is the how frequently pass interference is called on plays where the pass is underthrown and the WR runs into the defender, who almost always has good position, to try and get back to the ball. How is that a penalty?! The throw is bad. The quality of the throw matters -- for example, if it is overthrown by 10 yards, it doesn't matter how blatant the interference is, it is uncatchable and no foul. Using this rule basically says that a bad throw can negate good positioning by a defender. Stupid. The same with the abundance of flags that get thrown when a defender has his hand on the back of a receiver. Did it interfere? Did the arm turn the receiver or interfere with his ability to catch. A ton of great defensive plays get penalized by lazy officiating on those plays.The "defenseless receiver" and "controlling the catch" rules rely on an ambiguous "make a football move" rule that is not consistently enforced and is counter-intuitive. How about ground can't cause fumbles and two feet down with control is a catch? That is easy. Defenseless receiver? Rule assumes the offensive player has a greater right to the ball than the defender has to break it up. If you hit a guy with your helmet, etc. it is a personal foul. Defenseless receiver calls are unnecessary. The QB rules are even worse. Can't hit high, can't hit low. When the league gets smart and gets a new commissioner, I hope he (or she) decides to go through and simplify the rulebook and then pays refs year round so these calls can get consistent. With betting, fantasy, one week/day fantasy leagues---fans have more money than ever riding on NFL games. Bad/suspect officiating will prove to be bad for business unless they clean it up.
For more information on penalties, check here: http://www.nflpenalties.com/
For more information on penalties, check here: 
