There’s one reason to see this film: Meryl Streep. The Iron Lady follows Britain’s Margaret Thatcher from aspiring politician to political powerhouse, from loving wife to grieving widow.  Streep brings to this range of life experience her power to move one with the slightest tilt of her head, to convey inner experience with the minuscule shift of the direction of her eyes.  By the end of the film, one feels one has been enlarged and touched by the depth with which one has shared the full life of another human being from the inside.  We feel we know what it felt like. That makes the movie a great pleasure to experience.