Jon Stewart is a comedian, director, writer, producer, activist, and television host. He's the director of the new film "Irresistible".Jon Stewart is a comedian, director, writer, producer, activist, and television host. He's the director of the new film "Irresistible".Jon Stewart is a comedian, director, writer, producer, activist, and television host. He's the director of the new film "Irresistible".