For some viewers, the core visual joke of Iron Sky--Nazis on the moon--will wear out its welcome by around the halfway point. Maybe even a little earlier. That's a completely understandable reaction given that the movie goes big on the initial gag before about a planned invasion of Earth by displaced Nazis in the near future and then subsequently abandons the premise for a satire of American politics.
Stick in there, though--Iron Sky might not be the most incisive sci-fi comedy about a Nazi invasion from the moon, but it does deliver on the premise with some well-executed outer space battles and a surprising burst of sincerity in the final act.
