The surprise 0-2 team that needs to panic is ... the Vikings. Whereas the Cowboys can correct their mistakes, I think Minnesota is a team that doesn't have enough weapons. They see now what Sidney Rice meant to them last year. He gave them an explosive part of the puzzle that's clearly missing this year. Now teams are going to take Adrian Peterson out of the equation and force Brett Favre to beat them, and Favre doesn't have the right group around him to be effective.
As for Favre, he's still a capable quarterback, but he's at a point in his career that he needs weapons to succeed. Take away Rice or a healthy Percy Harvin, and three-interception games become more and more likely.