Like I posted earlier, that's the one I am the shakiest on. Green Bay is hot, but they got trounced last week. Washington is a good team that has a killer pass defense. Guess what Green Bay does the second most in the league? Green Bay also has the worst running game in the league. They have been depending on the short, quick passing game to get it done. Please remember that Favre all the records aside, is 38 years old.
Portis with Washington is a stud. They slaughtered the Lions last week and their young quarterback is on a roll. Their pass defense is killer and their offense is much more balanced.

All that being said, I still think that GB will win but won't be surprised in the least if Washington takes it.