So, you’ve discovered you’re a superhero. Now what? Many a comic-book origin story movie has had to answer this question, and “Shazam!” approaches it with both a light touch and a heavy splat. In this scene, Zachary Levi plays Billy, a boy recently imbued with new powers (along with an adult body). His foster brother Freddy (Jack Dylan Grazer) helps him figure out just what those powers are in a sequence that involves a painful-looking stunt leap and some pyrotechnics. Read The Times Review: htt