Kids brainwashed by advertising
This article in today's NYTimes describes how kids prefer foods that come in McDonald's packaging to the same foods in plain wrappings. Apparently the official McDonald's response is to add healthier foods - with the proper appealing packaging - to their lineup, rather than cop to the brainwashing.
As summed up by one of the researchers,
“We often hear that parents are the ones responsible for their kids’ nutrition,” Dr. Robinson said, “but in reality there are these other factors, created by a tremendous amount of advertising effort, that undermine parents’ ability to make healthy choices.”