From Acme Packing Company:
QB Aaron Rodgers. It's almost required to start him every week since he's probably the highest rated QB your fantasy league. Nothing hurts him in week 1 as the weather should be sunny in Philadelphia, and the Eagles are introducing two new starters in their secondary.
RB Ryan Grant. He certainly could have a big day, but it depends on whether the Eagles will over commit to stopping Rodgers. At his worst he will be a solid 2nd starter or flex option all season since he's certain to receive at least 20 carries and remain their go-to back at the goal line all season.
WR Greg Jennings and WR Donald Driver. With great stats for Rodgers come a lot of touches for his top 2 receivers. They'll be on the field for nearly every offensive snap. While Jennings should be starting in every league, Driver should be on the short list as your flex option.
TE Jermichael Finley. His role keeps getting bigger and he's become a top fantasy option because the Packers don't use him like most tight ends, who are often a secondary option or goal line option. Finley plays a central role in the entire passing scheme and will line up wide as a receiver on many occasions. He's looking like the next TE Antonio Gates and should be starting in every league.
Packers D. The secondary has some question marks, but Woodson, Collins and Williams combined for 19 INTs last season and all of them are healthy. A shaky start to the QB Kevin Kolb era could provide a big fantasy point total.