Is this the sweetest championship of them all? And more pointedly, could it be the last of an era? Take a good, long look at pro football's acknowledged greatest dynasty, one equally revered and reviled. It started out 17 years ago when, as lovable 14-point underdogs, the New England Patriots pulled off one of the game's biggest upsets. Now, with their record-tying sixth Super Bowl title in their record 11th appearance, they may have earned their...