Robert Irvine charges in like a bull in a fine dining establishment, except the restaurant in need of rescuing is not fine. In fact, typically it’s failing. His television show on Food Network, Restaurant: Impossible, showcases Irvine’s talent for reviving dying eateries with a change of interior, menu, branding and, of course, food. At the end of each episode, the nearly-shuttered restaurant becomes a successful, vibrant community eating space. Does the charity world need a similar hero?