Entertaiment is a broad field that encompasses many different kinds of cultural and artistic expressions. It includes familiar forms that have a tendency to cross traditional boundaries of media, such as movies, books, music, games and newer online forms. Some of these forms touch on themes that the human brain was evolved to deeply react to, such as murders and backstabbing in social situations. These examples have been automatically compiled from various online sources, and may not represent the opinion of Merriam-Webster or its editors.