Joseph Goebbels has often been cited as the man who did the most to help Adolf Hitler and the Nazi Party rise to power; he was the architect of the party's propaganda machine and helped to craft the public image of Hitler as he became one of the most hated and feared leaders of his time, and masterminded the greatest crime of the 20th Century. However, while Hitler's life outside of politics has long been a subject of interest, less is known about Goebbels, and The Goebbels Experiment is a documentary which draws upon Goebbels' own journals and rare archival to craft a portrait of his private side, including his passion for the Nazi cause, his devotion to Hitler, his battle with depression, his dramatic mood swings, and his severe contempt for anyone who did not live up to his standards. Kenneth Branagh narrates the English language version of the film.
~ Mark Deming, All Movie Guide