In 1987, a year after Watchmen and Dark Knight Returns turned comics grim and gritty, artist Kevin Maguire proved that comics could still be fun, with the release of the "all-new" Justice League. His style was the perfect match for the humorous dialogue and character-driven stories, and the unlikely series quickly developed a large following. But the glue that held the series together was Maguire's ability to convey emotion on...