This time, he might mean it.
Then again, the paperwork doesn't mean anything -- Favre can still change his mind and play next season. So maybe not.
Favre is a sure-fire Hall of Fame quarterback. He's also maddeningly indecisive each off-season. He first announced his retirement in March 2008, then changed his mind four months later. Each year since, it's become an annual off-season game: Will Favre retire?
Last year, the New York Daily News even reported that he filed his retirement papers, saying, "This time, Brett Favre appears to be dead serious about staying retired." Apparently not.
Yet this is indisputable: Favre is one of the of the best quarterbacks in NFL history.
He started in 297 consecutive games from 1992 to 2010, an NFL record. In fact, his name dominates the NFL record book: He holds records for most career TDs, career passing yards, career passing attempts, career interceptions, career wins by a starting quarterback, most sacked and most fumbles.
He's been named league MVP three times and won one Super Bowl, with the Packers in 1997. He's also played for the Falcons, Jets and Vikings.
But he's coming off the worst season of his career, -- playing for the Vikings, he went 5-8 and threw 19 interceptions to 11 touchdowns. His passing rating, 69.9, was his worst ever.
"I know it's time, and that's OK," he said after his final game. "Again, I hold no regrets, and I can't think of too many players offhand that can walk away and say that. Individually and from a team standpoint, i twas way more than I ever dreamed of."