Liam Neeson has the magic touch that gives a boost to almost any movie he’s cast in, be it a love story or an action thriller. He makes the most mundane films palatable, so it shouldn’t be a shocker that Neeson is the best thing about “The Marksman,” a formulaic (but still entertaining) movie from director Robert Lorenz. Neeson plays Jim Hanson, an ex-Marine turned Arizona rancher who’s lost his wife to cancer and is about to lose his home to foreclosure. The man lives a life of solitude on an isolated stretch of land that touches the Mexican border. While out tending to his cattle one afte...