This Super Bowl has just about everything a fan, a player, a coach - and certainly a league - could ask for. Denver's record-setting offense versus Seattle's relentlessly stingy defense. ''It's very special to be here,'' Seattle coach Pete Carroll said of Sunday's big game. The game, the matchup, the culmination of the season, all of this is just extraordinary.'' This Super Bowl could also have a profound effect on the immediate future of pro football. More...