The city of San Francisco — and most of Twitter — stopped and watched last November, as five-year-old Miles Scott became pint-sized superhero Batkid. Miles, who has leukemia, was given the chance to dress up as his favorite comic icon by the Make-A-Wish Foundation. His day was made even more remarkable by the reaction from the city he wanted to save, as thousands of people turned out to watch the tiny crusader catch cartoon criminals around San Francisco. The feature-length documentary, created by filmmaker Dana Nachman, was teased at Comic-Con with a three-minute trailer that later appeared online courtesy of Deadline.