Mamá por encargo

The good point - Romany Malco and his Oscar. The worst point - the final part. But, at first sigh, a nice, easy comedy with significant names in cast and with the so predictable end , against logic. So, Tina Fey and Amy Poehler in the sauce of cliches.

There weren't too many people hotter than Tina Fey in 2008. Between the smash comedy 30 Rock, her impression of GOP vice presidential candidate Sarah Palin, and taking the lead for the first time in a movie with "Baby Mama," Fey and her iconic black-rimmed glasses have soared above and beyond Saturday Night Live. While the film "Baby Mama" might not be her most notable exploit, it's brand of subtle humor works in her favor and makes for an enjoyable film.

Fey plays Kate, a late thirties (her true age) businesswoman who has never been married and is also incapable of conceiving a child though she desperately wants one. When Kate stumbles across an agency specializing in surrogate pregnancy, she meets Angie, a high school dropout played by SNL's Amy Poehler, and the two agree that Angie will have Kate's baby. When Angie's trash boyfriend Carl (Dax Shepard) cheats on her, she moves in with Kate and the two have to reconcile their conflicting lifestyles.

Though Fey carries her own comedic presence in her reactions to the bizarre characters around her, it's Poehler's character that is meant to serve as comic relief in her mis-educated habits in life and in pregnancy. She provides a variety of physical humor and also gets some laughs at her character for her sheer ignorance, though it's pretty hit-or-miss with her. While in a lot of her work she can come off as annoying, she's a bit more mild in this film.

The rest of a cast is full of high profile actors in smaller roles and other familiar faces to boost the unproven star power of Fey and Poehler. Greg Kinnear plays Fey's love interest, who is just supposed to be a "nice guy" and nothing more and Maura Tierney of "ER" plays Fey's sister. Top that off with appearances by Steve Martin as Fey's zen/hippie boss and Sigourney Weaver as the head of the surrogate agency and there's plenty of time for "look who it is!" amazement as you watch.

"Baby Mama" doesn't throw anything unusual at us from a comedy stand point, especially being released not even a year after Judd Apatow's "Knocked Up" provided a similar concept, but it has its own subtle, very SNL-like comedic style. That might be easy to say because Fey, Poehler and creator Michael McCullers connections to the show, but like SNL sketches, "Baby Mama" relies on the talents of its actors in creating nutty characters and the way the "normal" characters perceive them. While this doesn't work all the time, it gets better toward the end and the plot keeps you interested enough to wear you certainly don't dismiss it and you may even really like it.

"They're borrowing one tiny little egg and some space." Donna Regan, surrogate mother

When a woman is 37, generating a baby before the alarm goes off is no laughing matter. Yet first-time helmer Michael McCullers makes an amusing, sometimes poignant rom-com out of not-quite-Judd-Apatow (Knocked Up) wit, but spot on one-liners about the insane race. (Kate Holbrook: What you eat, the baby eats. What you listen to, the baby listens to. Oscar: If you listen to DMX, the baby comes out going' "Ennngghhh!") The film is helped by some fine performances, notably Tina Fey's understated, distraught exec, Kate; Amy Poehler's wired, white-trash surrogate, Angie; and Steve Martin's New-Age entrepreneur, Barry, reminding me of how intelligently Martin can spoof anyone, even himself. But it's the script that rules, taking even the interesting mid-life-crises comedies of the last few years (40 year Old Virgin comes immediately to mind) to a new level of un-hyped reflections about parenting and careers, love and lust, among others.

Kate's meteoric rise in Barry's Whole-Foods-like company is never savaged for leaving her late to the baby business; it is rather a trade-off treated as reasonable that now must be factored in the decision to have a baby before 40 or whenever.

Even fertility, or its enhancement, gets its comeuppance with Sigourney Weaver's smarmy, smug surrogate agency head (remember her Katherine in Working Girl). In other words, while the odd-couple cliché of Kate and Angie, polar opposites, living together is unabashedly mined, the SNL and 30 Rock insights are in tact, flat at times, but overall bright commentary on a complicated contemporary situation that is both serious and funny.

The ending is the only authentic failure of the film—it's unimaginative writing is married to a Hollywood-enforced good feeling out of synch with the untidy enterprise of surrogate mothering and romantic fulfilling. In other words, because the ending is too pat and unbelievable, a surrogate writer should have been commissioned.

The entertaining comedy duo of Tina Fey and Amy Poehler don't quite live up to expectations in this movie. Those two are usually very fun together and while there are some amusing moments in Baby Mama, I ultimately found it to be a bit underwhelming. A good supporting cast can't lift it out of mediocrity either.

There is a smattering of smart laughs in this 2008 comedy, but first-time director Michael McCullers really plods his own coincidence-driven script along with little sense of style or dramatic resonance. At times, it feels no better than a formulaic romantic comedy from the 1960's usually starring small-screen celebrities trying to break into the big time. Sure enough, this time, we are offered Tina Fey (currently of NBC's "30 Rock") and Amy Poehler, former "Saturday Night Live" Weekend Update co-anchors and definitely the cream of the current funny lady crop. The problem is that McCullers, a one-time SNL staff writer who also co-wrote the Austin Powers movies with Mike Myers, doesn't elevate the screenplay much beyond the limited dimensions of an extended comedy sketch. That puts most of the pressure on the two women to make this farce work as a distaff version of "The Odd Couple" with a pregnancy angle, and they often - you should pardon the expression - deliver.

Ideally cast with her smart, bespectacled looks, Fey plays 37-year-old Kate Holbrook, single and professionally successful as the VP of an upscale organic supermarket chain much like Whole Foods. She hears her biological clock ticking and is taking every step possible to have a baby. Her last straw is to pay an agency $100,000 to find a surrogate. Naturally, her polar opposite shows up as the ideal candidate - a junk-food-eating, Red Bull-swilling piece of white trash named Angie Ostrowski who comes with her money-drubbing boyfriend Carl. Kate is so desperate she is practically begging Angie to carry her egg, so Angie willingly accepts. Somehow, the women end up living together during the pregnancy and inevitably get on each other's nerves, more Angie on Kate's nerves since a few revelations threaten to upend the deal. Convenience appears to trump logic in tying up the plot's loose ends, of which there are many. However, McCullers' alternately sauntering and piercing Judd Apatow-like approach helps compensate for the bigger lapses.

A game cast also helps. Although fairly limited as an actress, Fey is sharp and likable as the often dour Kate and has the ability to bring the implausibility of her character's situation into more human focus. Even though she is entirely too old for her role, Poehler is a more natural comic presence as Angie, terrifically manic but surprisingly poignant during key moments. It's obvious their joint casting has more to do with their proved rapport than dramatic credibility. In a turn worthy of Jeff Foxworthy, Dax Shepard credibly makes Carl a mercenary sheep. Romany Malco (memorable as Andy's horned-up co-worker in "The 40-Year-Old Virgin") is given little to do as the streetwise doorman, the same fate of Maura Tierney bland as Kate's supportive sister. Greg Kinnear must be getting awfully tired playing the same type of romantic foil over and over again, but he does do it well even though his scenes also seem strangely truncated. Two veterans threaten to steal the picture in acts of petty larceny - a pony-tailed Steve Martin very funny as Kate's Zen-seeking boss whose idea of a reward is allowing her to stare at him for five minutes, and Sigourney Weaver as the overtly self-satisfied and all-too-fertile head of the agency. SNL regulars Will Forte and Fred Armisen show up in cameos. A fitfully funny farce.