How to make a comedy out of very tragic events and characters? Adrian Brody did it in "Life Is Beautiful" about life in a concentration camp. "Look Who's Back" does it via the premise that Adolf Hitler returns to modern day Germany. Of course everyone believes that he is an actor - one who disturbingly never steps out of character. The audience knows that he cannot - as he actually is Hitler. Much of the film is humorous as Hitler tries to reestablish himself as "The Fuhrer" and tries to understand and cope with modern day technology and attitudes.
Oliver Masucci is brilliant as Hitler -playing the role so straight that he became very scary near the end. The brilliance of Hitler was aptly demonstrated as people began responding to the hate - filled rhetoric he employed on various television shows. In real life the industrialists supported Hitler because they were sure they could control him - they could not. The church supported him because they thought he would be useful to them and that they could control him - they could not. Finally the German Army threw in with him because they wanted to get rid of their rivals - Hitler's "brown shirt" Army - the Sturmabteilung (SA). He got rid of Strasser and Rohm and thousands of others as he dismantled the organization which carried him to power. But alas the Army also could not control him.
In the movie, he becomes a media star because of viewership and ratings. We see glimpses of the audience saying like "I think I agree with him, and he makes a lot of sense." The TV moguls are building their careers on his outrageousness and resulting popularity.
His grasp on people is creepy, insidious and feels quite realistic. This film shows you how riveting he could be - and gives you a glimpse into how he came to power.
So, beyond laughs - the message clearly is that this could happen again. We must be aware of potential dictators in our midst. A few people in the movie saw that he really was Hitler - and they were discarded at the end of the movie.
This movie is not a condemnation of Germany - past or present. Hitler in the movie postulates at the end of the film that we cannot get rid of him - because he is a part of us. I hope that is not true.