Act II is a brand of microwavable popcorn, produced by Conagra Foods.
Act II was preceded in the popcorn market by Act I, an early microwave popcorn that had to be stored in the refrigerator. Act I was introduced in 1981.
In 1984, Act II, a shelf stable microwave popcorn was released, becoming the first mass-marketed microwave popcorn
According to Conagra Foods, Act II is the best selling popcorn brand worldwide (2014).