Something snapped the other day when I happened to watch that Changeling trailer on the tube for what felt like the 26th or 27th time. To my surprise, I laughed. I’ve heard Angelina Jolie tearfully wail “I want my son back!” so often that the film’s generally affecting emotional poignancy has been made to seem garish and even tacky. Which Clint Eastwood is constitutionally incapable of being. That ad has blanketed everything.