Also..
There are bad calls and there are outright comical calls. Although (more than likely), not being one of the more integral bad calls affecting the game, the Hasselbeck illegal low "block" call whilst tackling the ball carrier has to be one of the most laughable calls in NFL history. Pre-Season, Regular Season, or Playoffs...
The fact that officiating a Super Bowl is supposedly based on a meritocracy makes it even more bewildering. I am more likely to solve the Riemann hypothesis than to understand how this call could have possibly been made.