In 1978, Christopher Reeve made the world believe in superheroes with his portrayal of Superman in the eponymous film. The star died in 2004, nearly a decade after suffering a tragic accident that re-shaped his life and his family’s. Now, the documentary “Super/Man” shows us just how heroic Reeve was in real life. Michelle Miller has more. “Super/Man: The Christopher Reeve Story” will be in theaters on Friday, October 11.