Martin Casella is an American actor, screenwriter, playwright, and director whose career has encompassed film, television, and theatre. He is best known for portraying Marty in Poltergeist and for appearing in films such as The Hollywood Knights and The Last Married Couple in America. Beyond acting, Casella has built a respected career as a playwright and screenwriter, with his stage works produced internationally and several screenplays developed for film and television. His diverse body of work has established him as a versatile creative talent working successfully both in front of and behind the camera.