Unfortunately, since 1975 (earliest cognizance) my favorite NFL team (only 4th favorite sport behind College Football, MLB, and NBA) are the Cowboys.

I blame Staubach, the two Pearsons (Preston and Drew), Robert Newhouse, Mel Renfro (Oregon Duck!) and Ed "Too Tall" Jones, then later, Randy White (the undersized "Manster" playing DT) and Tony Dorsett (99 yards on MNF!). And then later, after Montana's reign, Aikman, Smith, Irvin, Erik Williams (the dirtiest player in the NFL), Larry Allen, and Doug Cosbie.