Premise: ``Old Christine'' (Julia Louis-Dreyfus) is a divorced mom who has a handle on her career and motherhood -- and a pretty good relationship with her ex-husband -- until he introduces his new girlfriend, a younger woman, also named Christine. Old Christine lives with her son and her brother, and runs a gym, and her life is a constant struggle to keep up with everyone else.
S05, E21 (First Aired: May. 12, 2010)
When Christine has Matthew and Barb throw her a surprise engagement party so she can get to know Max's friends, she begins to feel intellectually inferior to one particular guest, driving her to make a surprising decision.
S01, E01 (First Aired: Mar. 13, 2006)
On her son's first day at private school, Christine discovers that her ex-husband is dating an impossible-to-hate woman with her name.