Episode Titles: Congruence

 You are viewing a list of 1 The Big Bang Theory episode featuring "Congruence" in their title.

  • The Maternal Congruence

    Season 3, Episode 11 - The Maternal Congruence
    Aired December 14, 2009

    Leonard's mother, Dr. Beverly Hofstadter, is in town over the Christmas holiday. His mother's visit is distressing for Leonard, especially after she finds out about his relationship with Penny. Sheldon, however, is pleased to spend time with Dr. Hofstadter, whose analytical mind he finds enthralling.