‘Baby Mama’

Baby fever is ever-so-gently but slyly lampooned in Michael McCuller’s “Baby Mama,” starring Tina Fey as a single, successful businesswoman who wants a baby and the white-trash surrogate (Amy Poehler) she hires to have it for her. Had Fey written the movie, you get the feeling, the skewering would have rendered it a delicious shish kebab of social satire. Instead, it aims to please, which isn’t bad either.