I've already talked about Vick, but he wouldn't be as successful as he has been without the weapons around him.
DeSean Jackson and Jeremy Maclin are arguably the biggest play making duo in the league and have both had a ton of success with Vick at the helm. Jason Avant is the Eagles version of Steve Smith, a third-down reception machine. He hasn't seen as much action as he should, but if you throw Riley Cooper into the mix, it's a very dynamic receiving corps.
In the backfield, LeSean McCoy has been extremely explosive all season, and we even saw Jerome Harrison make some big plays last week. If he continues to play like that, it creates quite the running back duo for the Birds.
Brent Celek is having a down year statistically, but he has been doing a lot of things this season to improve his all-around game. However, he has played very tough this season, and can be an absolute bulldozer when he's running with the ball.