Lars von Trier is a Danish film director, screenwriter, and producer. He is best known for his films such as Breaking the Waves, Dancer in the Dark, Melancholia, and Dogville. He is considered to be one of the most influential filmmakers in the world and has been awarded numerous awards, including the Palme d'Or at the Cannes Film Festival. His films often explore controversial topics such as religion, sexuality, and violence.