The hardest ones...
Fat-free popcorn, Raisin Bran/Kashi Go-Lean Crunch w/ skim milk, Whole Wheat bagel with real blackberry jam
Those are my top-tier kryptonite. Ones that I find myself craving atleast one every two days. Thank god for PWO.
2nd tier... "Americanized" Asian food (read fried and sugared) and pizza. Honestly, while I love these, I know in many ways the bad outways the good, so it's easy to take em or leave em. The top-tier ones have certain redeemable qualities that in my mind make them 50% cheat foods when eaten outside of the PWO window, and do to their somewhat innonuous nature, easier to indulge in.
Other than that I could be a model Berardi/Lowery/Clean Eating spokesperson.