Here's a fun coincidence! Oscar Isaac, who starred in the A24 movie Ex Machina, has signed on to star in a Legendary movie based on Brian K. Vaughan's award-winning comic book Ex Machina, which is completely unrelated to Alex Garland's 2014 thriller. This Ex Machina story -- which has been retitled The Great Machine, more on that below -- follows Mitchell Hundred (Isaac), a former superhero who becomes the mayor of New York City after 9/11. Hundred had the power to talk to mechanical devices, but the comic was more concerned with issues of government and political …