In the wake of their friends' marriages and eventual offspring, longtime pals Julie and Jason decide to have a child together without becoming a couple. By becoming "time-share" parents, they reason, they can experience the joys of parenthood without significantly curbing their personal freedom. However, when Julie and Jason both become involved with others, they discover that they secretly harbor romantic feelings for each other.
Adam Scott
as Jason
Jennifer Westfeldt
as Julie Keller
Jon Hamm
as Ben
Maya Rudolph
as Leslie
Chris O'Dowd
as Alex
Kristen Wiig
as Missy
Megan Fox
as Mary Jane
Lee Bryant
as Elaine Keller
Kelly Bishop
as Marcy Fryman
Cotter Smith
as Phil Fryman
Nina Lafarga
as Penelope
Vince Nappo
as Businessman / Julie's Date