Justin Timberlake: still acting! Fresh off just-wrapped roles opposite Clint Eastwood and Amy Adams (in a baseball movie) and Carey Mulligan (in a Coen brothers folk musical), the formerly chart-topping thespian has signed onto Runner Runner, which will pair him with Ben Affleck. Variety broke the news that the two will star for director Brad Furman (The Lincoln Lawyer) in the project, which is set in the world of offshore online gambling. Ben Affleck in a movie about high-stakes, illegal poker? What would he know about such a thing?