The Maternal Congruence
Show: The Big Bang Theory --> Season: 3 - Season 3
AirDate: 12/14/2009
Runtime: 20
Voting: 7.611 (45)

Overview: A Christmas visit from his mother has Leonard discovering she's kept a lot of news from him that she shares with Sheldon and worrying if she'll approve of his romance with Penny.
Christine Baranski
Beverly Hofstadter