Potato Avenger hit all the biggies I would want in my corner.
But just for kicks, I would bring Mark Sisson, shirtless, and make sure all the FDA/USDA crackpots knew exactly how old he is. =)
Edited to add: She may not be glamorous, but nobody knows more about how GOOD saturated fat is for you (and how insanely terrible trans fats and too much n-6 is) than Mary Enig.
Damn, I wish Weston Price were still alive... I assume we have to keep our picks to the living? Hehheh. ;-)