The Paleo guys say no milk of course but I don't think they have science on their side. Skim milk has the requisite 4:3 carb/protein ratio the Zone Diet requires, and IIRC, 2% milk gives you the 30/30/40 ratio almost exactly.
I'll mix skim milk with my protein shake (Cytogainer) and eat nuts to get the fat for a meal replacement. After a workout, you do not need the fat. Also, after a workout, your body can utilize more sugars to replace the glycogen you just burned, without jacking insulin up. Some say chocolate milk is the perfect post-workout/recovery food. Basically a Zone liquid meal plus some extra simple sugars.
Many prefer skim milk to avoid saturated fat. The research is now coming in that, as many have long said, saturated fat, in moderation, has never been a factor in heart disease, and may actually be cardio protective.
