>I think you might be confusing one of them with someone else, because Mary Enig and 
>Sally Fallon gave a thumbs-down review to The Paleo Diet and I'm not aware of them 
>collaborating with Dr. Cordain.

Wasn't their basic "beef" with the Paleo Diet the fat vs. lean issue? I recall reading the review and through it a bit disingenuous - it seemed they focused on one facet they disagreed with and then condemned Cordain and the diet as a whole (even though it lines up fairly nicely with most of their philosophy). Personally, I think they emphasize whole grains and milk a bit too much (I got in a lengthy debate with one of their followers on another list).