Watch The United States of Tara Season 1 Online. Showtime’s newest addtion to their top tv series, its the United States of Tara Season 1 Online. The main character in this series is Tara and is played by the non other than the talented Toni Collette. In this series, Tara plays a suburban mother of two teens suffers from multiple personality disorder. The family is anything but ordinary. Aside from the fact that her quirky, good-hearted son has a crush on a boy in his film class and her troubled daughter struggles to locate boundaries with men, Tara has her own issues, she isn’t always herself. Watch The United States of Tara Season 1 Online episodes free streaming.