Sergio Leone was an influential Italian film director, best known for his work in the Western genre, particularly the subgenre known as Spaghetti Westerns. His films, such as The Good, The Bad and The Ugly and Once Upon a Time in the West, are celebrated for their stylistic innovations, including long takes, close-ups, and dramatic music scores composed by Ennio Morricone. Leone's unique storytelling and visual style have left a lasting impact on cinema, inspiring countless filmmakers. His ability to blend action with deep character development set a new standard for the Western genre, making his films timeless classics that continue to resonate with audiences today.