Alton Brown did an AMA on reddit today. Here’s his take on paleo:
I have to say that although I do think the American diet is too grain dependent, I don’t think that the meat-heavy Paleo approach is right either. We’ve evolved as omnivores and that means we should eat a bit of everything…in my opinion.
I doubt any of the Paleo-TM gurus will lose any sleep over AB’s two cents, but there it is.
Weight Maven is written by Beth Mazur. Beth believes that obesity is more symptom than cause and that the real problem is our Western diet -- especially sugar, refined grains, and industrial oils. Beth writes about nutrition, ancestral health, & food policy. And cats! 
Hmmmmm I eat way more veggies than I do meat. Dang, wheat made me soooooo sick. Eating a little bit of everything kept me stuck for 40 years on the weight loss/weight gain cycle.