I think Packers-Vikings increased as a rivalry this past year because of Brett Favre, but on the whole Bears-Packers is the biggest rivalry in the NFC North and it isn't even close. Honestly I think only Bears fans think that. I doubt you'd find many Packers fans who'd agree, and I'd say that goes back before Favre jumped ship. Then we are getting back to the argument about two teams being good at the same time equaling rivalry. I think you'd have a hard time finding people arould the nation who believe Packers-Vikings is bigger than Bears-Packers. In fact I'd challenge anyone to find some sort of list which says it.