Abstract: A system allows users to interact with traditionally one-way entertainment content. The system is aware of the interaction and will behave appropriately using event data associated with the entertainment content. The event data includes information for a plurality of events. Information for an event includes references to software instructions and audio/visual content items used by the software instructions. When an event occurs, the software instructions are invoked. This system may be enabled over both recorded content and live content, as well as interpreted and compiled applications.