How's this for a theory? I posed this to a friend just today.
Brett Favre will be groomed to replace John Madden in the broadcast booth, once Madden reaches, say, his 75th birthday (Madden turned 72 last week). He could start out on Football Night in America. NBC has the Super Bowl this coming season, so the anticipation would be high.
I could see Brett Favre turning into the new Madden quite easily...and considering the former's worship of the now-retired QB, wouldn't that be something to see? If you've ever listened to Favre in his weekly pressers with the Packers as I have, you realize he would make an excellent color commentator. He knows the game and most football fans have a high opinion of Favre, so you know his Q rating would be off the charts.