With the exception of the Saints/Seattle game, anyone who says they have a great feel for who prevails this weekend is whistling past the graveyard. This will be one of the most comptetive playoffs we've ever seen with no dominant team or teams. The closest thing to 'shoe-ins' we've got this year are New England and Atlanta, but both of those teams could realistically be ousted by their first opponent. I don't think they will be, but it's quite possible.
As for the question at hand, I think the Saints will put 40+ points on the Seahawks. The Hawks had their miracle win last weekend, and while Qwest is a brutal place to play, I just don't think the Seahawks have enough weapons to stay in this game.
The Jets/Indy game is very difficult to predict. I am taking the Colts, but don't have a lot of faith in my pick. It's tough to pick against Peyton no matter how weak the Colts have looked at times. But mostly my pick is based on two things - home field advantage for Indy, and the fact that 3 weeks ago, the Jets were in a free-fall that called even their playoff possibilities into question. They are hardly the team of destiny that big mouth Ryan purports them to be. I won't be shocked if the Jets show up and eke out a win (they are capable of it if they play their best). But I'm not expecting it.