If you’ve ever wondered how many calories are in that tub of buttered popcorn at the movies, it looks like you’re about to find out -- whether you want to or not. This morning, the FDA announced new rules that will require movie theaters to post calorie counts, along with chain restaurants, vending machines, and amusement parks. We look at how the Affordable Care Act paved the way for more food labeling, and the intense lobbying to control who’s affected.