Any way you look at the last 25 years in film, there’s no denying that superhero movies have been a vital part of 21st-century big screen entertainment. Many refer to the release of “Iron Man” in 2008 as the official kickoff of what would become the moneymaking engine that resulted in a steady stream of blockbusters,

Edition host A Martínez asks writer/director James Gunn, the man behind the reimagining of the entire DC Comics universe for the screen, about his vision for Superman.