Previously known for his series “Ed,” actor Tom Cavanagh now plays the scientist who created “The Flash” on the superhero series. He tells TODAY that the trouble with lowering your voice to play a super character like the villainous Reverse-Flash (whom he also plays) is that it’s hard to be heard across a room. He also reveals the superpower he’d most like to have: “The ability to eat pizza nonstop with no deleterious effect” – which leads to a discussion of “Mike & Tom Eat Snacks,” his podcast with comedian Michael Ian Black.