Mad Men star joins Katherine Heigl’s upcoming romantic drama Life As We Know It. Firefly/Mad Men actress Christina Hendricks has been cast in Katherine Heigl’s upcoming romantic drama Life As We Know It. The film follows two single adults (Heigl and John Duhamel) who are named joint guardians of a young girl after her parents, mutual friends of the pair, are killed in a car accident. Hendricks will play the best friend to the lead characters. Greg Berlanti is on board to direct the Warner Bros film, with Heigl and her mother Nancy acting as executive producers.