This is an interesting article:
http://www.thepaleodiet.com/articles/AJCN%20PDF.pdf
The main departure Fallon and Enig have from Cordain is thier enamorment with saturated fats. I am not sure what to think aobut this but they do advocate both sources and amounts which do not fit well with the previous 99% of our hominid history.
Robb