He'll most likely get the Vikings to the playoffs and most likely do something equally as stupid as he did to the Packers in the NFC championship game 2 years ago and again to the Vikings in the Super Bowl last year.
It's not enough for a quarterback to have all the physical tools but he also must also have the brains to be able to count to 21 without being naked.
Awesome, now Favre is back. He can help the Vikings breeze through the regular season again and completely choke for like the 8th straight time in the playoffs by making a terrible pass in a clutch situation. Favre wins during the regular season, but come playoff time you can count on him to blow it. He's selfish, and wants all the glory. He's no team player.