If you ever wondered what was going through the head of Mary Kay Letourneau when the teacher started an affair with her seventh-grade student, Birth offers a possible answer. The movie stars Nicole Kidman as a grieving widow who meets a 10-year-old claiming to be her reincarnated husband. That’s good enough for her, and before you know it the two are sharing a nice warm bath. With such scenes, the occasionally atmospheric Birth soon devolves into camp.