Boxes of Cracker Jack are famous for having a toy surprise inside. But a soon-to-be-introduced version of the snack is surprising some with the addition of caffeine in one version. The nonprofit Center for Science in the Public Interest says that if government regulators don't take some kind of action, products like Frito-Lay's Cracker Jack'D could set off a new craze in which manufacturers add caffeine itself or coffee to more and more varieties of foods and beverages.

In a letter to the FDA's Center for Food Safety and Applied Nutrition, CSPI executive director Michael F. Jacobson alerted the agency to Cracker Jack'D, Kraft's caffeinated "water enhancer" MiO Energy, and caffeinated "Extreme Sports Beans" marketed by the Jelly Belly Candy Company.

"The way things are going, I fear that we'll see caffeine, or coffee. being added to ever-more improbable drinks and snacks, putting children, unsuspecting pregnant women, and others at risk," said CSPI executive director Michael F. Jacobson. "How soon before we have caffeinated burgers, burritos, or breakfast cereals?"

Read more from the Center for Science in the Public Interest.