Everyone has a pretty difficult matchup here, I would say it comes down to Fred Jackson and Percy Harvin personally. Jackson is going to be sharing caries with Lynch this week however will still get a majority of the caries as he is fresh on the field, they will most likely slowly ease Lynch back into the running game. Not to mention TO doesnt look real hot right now.
GB's secondary isnt all that great and Harvin has proven himself game after game, but Farve is a total toss up and I see the Vikings running the ball against GB.
After debating it, im gonna have to say Jackson over Harvin, but you won't go wrong playing either. http://www.fantasyfootballcafe.com/forums/viewtopic.php?t=451165