Baby Mama

I’ve seen this episode of Baby Mama before, sometime in January 2007, when it was titled “The Baby Show” and aired on the other prime-time series starring Tina Fey, 30 Rock. (Wait — you say Baby Mama is a movie and not a TV show? Seriously?) It was funny the first time around when Fey, as late-night-TV exec Liz Lemon, suddenly found herself drawn to the sound of cooing and the scent of baby powder. Baby Mama extends the joke, then softens it, then smothers it in its crib ­— an unpleasant image, perhaps, but no more disagreeable than the phrase “produced by Lorne Michaels.” Ultimately, that’s all this shrugging disappointment is: a Saturday Night Live sketch stretched a good hour past its breaking point. It even pairs Fey with her former “Weekend Update” co-anchor Amy Poehler, who shows up as womb surrogate Angie. The movie exists solely to reunite this winning comic duo.