If you haven't watch the Flash movie, go for it. As entertaining for all, comic fans gets a treat of source material from the books and the past movies, cameos and some comic logics that as usual, made sense and at the same time are senseless. For the "haters" of the Justice League version of the Flash, for his trying to be funny attitude, this time the Flash is damn serious. No spoilers here. Tons of cameos and a cool bat cycle that does battle.