Accidentally on Purpose is an American sitcom television series created by Claudia Lonow, that ran on CBS from September 21, 2009, to April 21, 2010, during the 2009–10 season. The series stars Jenna Elfman, Jon Foster, Ashley Jensen, Nicolas Wright, Grant Show, and Lennon Parham and was produced by BermanBraun and CBS Television Studios. It was based on the book of the same name by Mary F. Pols.

Plot

Accidentally on Purpose follows Billie (Jenna Elfman), a San Francisco movie critic in her 30s. Billie meets Zack (Jon Foster), an aspiring chef in his 20s, at a local bar and they have a one-night stand. She soon finds out that she is pregnant, and decides to keep the baby. She must simultaneously deal with her boss and ex-boyfriend, James (Grant Show), who finds himself jealous of Zack. Before the story began, she had hoped that James would ask her to marry him, but he told her that he was not ready because he was married once before.