3. Brett Favre
Ron Wolf’s swindling of Jerry Glanville and the Atlanta Falcons, when he traded for the Howitzer-armed Brett Favre, is the NFL’s equivalent of Seward’s Folly: everyone thought it was crazy at the time, but anyone who doubted the deal then looks like the crazy one now. But the renaissance of the storied Green Bay Packers franchise wouldn’t have taken place if it weren’t for Favre and his absolutely incredible passing abilities.
By the time Favre retired — for good — after the 2010 season, he held virtually every passing record you could think of, including most starts by a quarterback, most passing attempts, most passing yards, and even most interceptions.