While I don't consider chocolate milk as true sports nutrition, I do agree with Apolo that it tastes good, is easily accessible, and has a reasonable carb/protein ratio. While I wouldn't use it during activity (stomach could be really upset with milk), if I had access to nothing else, chocolate milk for after a workout would be a good option. It is really important to put good calories back into your body after a strenuous workout within 20 minutes of being done.
This series looks interesting and got my triathlon juices flowing a bit. I assume he will do fine because as an athlete he knows how to work and is fit, but it will be interesting to see just how he does with each of the three disciples and the multi hour endurance vs short track fast twitch speed. He has some amazing coaches and training partners lined up, that's for sure.