Blockbuster hits are films that achieve significant commercial success, often grossing hundreds of millions of dollars at the box office. These movies typically feature high production values, star-studded casts, and extensive marketing campaigns. Examples include Avatar, Titanic, and The Avengers, which have captivated audiences worldwide. The term 'blockbuster' originated during World War II, referring to bombs capable of destroying entire city blocks. Today, it signifies films that dominate the box office and become cultural phenomena. Blockbusters often set trends in filmmaking and influence the industry for years to come.