Weil On The Obvious

The idea that adults should drink chocolate milk after a strenuous workout appears to stem from a single, small study published in the February 2006 issue of the International Journal of Sport Nutrition and Exercise Metabolism. The study, which was partially funded by the dairy industry, included only nine participants, male cyclists who rode their bikes until their muscles were exhausted and then drank either low-fat chocolate milk, Gatorade or a sports drink that provides protein plus more carbohydrates than these beverages typically contain. The cyclists rested for four hours after their drinks and then rode again. The study found that those who drank the chocolate milk were able to ride about 50 percent longer than those who drank the sports drink and about as long as those who drank Gatorade.

I haven't seen any evidence suggesting that adults who work out regularly but who aren't endurance athletes would be better off drinking chocolate milk after exercise. If you did, you might end up taking in as many calories as you just burned.
http://www.drweil.com/drw/u/QAA401147/Is-Chocolate-Milk-a-Healthy-Drink.html

I think this one's obvious - recovery drinks are for athletes doing intense training for competition, and therefore have trouble ensuring full recovery between workouts.  For those of us who train as often as possible but still not that often - it's most likely a self defeating waste of money.  Eat meat, eggs, vegetables, nuts and seeds, little fruit or starch, no sugar/wheat.