I had heard protein as well, but also with some carbs added in to help replace depleted glycogen. Fat is least beneficial. There was a discussion on here a while back, and it was supported by some articles I've seen since, that stated chocolate milk is a perfect post-exercise drink.
"If you drop an egg, you don't say, 'Oh, shoot' and drop the other 11, do you?"
-Source unknown, but obviously brilliant
Reached goal 4/16/2010...but kind of afraid to look these days