Well, this thread brought good luck last week, so keep 'em coming.
Peterson is the threat that concerns me the least, frankly. He hasn't had a big game since like October, unable to maintain even a 4.0-yards-per-carry average since. To boot, with Favre on board I think Minnesota is a team that relies on the passing game to win, and sprinkles in the run just to keep things honest. We'll see how that plays out, though.
Rice poses problems because of his athleticism. He can be covered but still has the ability to make the tough grab. This is something Philly didn't have. Harvin more reminds me of the kind of receiver Philly was full of, so I don't know that he poses anything Jackson or Maclin didn't. In fact, I think they're pretty darn identical.
The key against Favre is pressure. He's 40 years old and the last time we played him he couldn't finish the game and left with his lowest-ever QB rating (8.9, I believe). Ratliff, Ware and Spencer are the keys to this game. We must pressure Favre without throwing the kitchen sink with excessive blitzes.
Shiancoe worries me, but we've done well against prolific tight ends outside of Week 17 against Philly. Gates, Gonzalez and Celek (twice) didn't do too much that I recall.
As for Allen? He's a force to be sure, but his production has tailed off in recent weeks.
We'll see.