The quality of the career of director Robert Zemeckis can almost be broken evenly in half. His first 12 films, which included the Back to the Future trilogy, Who Framed Roger Rabbit?, Forrest Gump, and Cast Away, were mostly hits both with critics and audiences. But in his last 10 films starting with The Polar Express in 2004, Zemeckis has become obsessed with pushing technological boundaries, which has ironically hindered the success of those movies.