I think we had this question a couple months ago on the Around the NFL board.
Without looking it up:
Giants: Phil Simms, Jeff Hostetler, Eli Manning
Redskins: Joe Theisman, Doug Williams, Mark Rypien
The Cowboys had Staubach and Aikman, and did they have Craig Morton when they won Super Bowl VI, or was that Staubach? I'm guessing it was Morton.
I think that's it. All I can think of for the Raiders is Stabler and Plunkett.
I'm sure somebody will straighten me out on this, hopefully without googling it.