Rather than hire Nolan North, or the three guys that do all of Bethesda's voice work, Heavy Rain did the smart thing and went and got some proper actors. Best part is, they didn't stop at using just their voices.
Like Half-Life 2 and Mass Effect 2 have done previously with great success, Quanitc Dream used not only the actor's voices for Heavy Rain, but modelled the in-game characters on their facial features as well. In some cases, like Madison's, there's just an influence, while in others, like Shelby's, you can see it's just a straight-up replica.
I've included two comparison shots here, but for the full set, head over to Ars Technica, link below.
Reality blurs between Heavy Rain characters and actors [Ars Technica]