Baby Mama (2008)

Tina Fey brings her Liz Lemon character to film under a different name. She's a professional, aging, single and baby crazy. When her doctor tells her she's incapable of becoming pregnant she hires a surrogate mother - a trailer trash girl played by SNL pal Amy Poehler.

The film is funny, mainly due to Fey's one liners and awkward disposition.

Official Site | IMDB