Anyway, I recorded the first hour of the creation of this one using Camtasia which includes all the face elements and the hair. It's not the complete process since this ended up taking a few hours longer than anticipated but I think it will help the curious get a general idea of how this was accomplished. It's sped up a bunch and so it only takes 10 minutes to view. I have to edit together some of the footage but once I get that done i'll post it here in a few days. (*UPDATE*: its posted here now)
Since Stewie Griffin was second in the poll, I'll work on him the next time I make an untoon.
*UPDATE* Hey all, I just wanted to clarify a bit. Perhaps "untoon" is the wrong word for this but the exercise here was to take the exact cartoon proportions of Jessica and create her with realistic lighting and textures. As was done with Homer and Mario. I think because of her smooth skin the cartooniness definitely still comes through a lot more than Homer. Here is a side by side of the source image I started with.
Thanks for all the comments and feedback so far!