Baby Mama adheres fairly closely to the conventions of the studio comedy, although it's never actually predictable, probably because the characters and subject matter are so novel.

The film is not exactly original but it is a lot of fun, thanks to the skill with which Fey and Poehler play to one another's strengths.

An under-achieving, lightweight movie that settles for a few competent gags and doesn't bother to take risks.

Sitcom hijinks ensue. The appeal of this one is all in the cast.