Okay, on three, now push it, push it real good. Last year’s trend of “I’m pregnant!” laffs continues into 2008 with a twist called Baby Mama. See, Tina Fey’s character can’t get pregnant, so she hires an uneducated chick from South Philly to be her surrogate, or as some might loosely refer to on “the streets”: a “baby mama”! Fey’s homegirl from the SNL “Weekend Update” years, Amy Poehler, gets her baby mama on, squatting in a sink, eating junk, watching monster truck rallies, giving delayed response, and possibly using PAM spray to deliver. Sigourney Weaver and Dax Shepard (still in Idiocracy mode) also appear, ranking about a 4 [...]