Leonardo DiCaprio is an actor who has had a diverse career, from early roles in the sitcom Growing Pains and low-budget horror films to becoming a leading man in Hollywood blockbusters. He gained fame as a teenage heartthrob with roles in Romeo + Juliet and Titanic, and later collaborated with directors such as Martin Scorsese and Christopher Nolan on films like The Departed and Inception. He is also a committed environmentalist involved in causes and documentaries such as The 11th Hour.