. . . . . . . . . . . . . . . . . . . . . . . . . . "Leonard's mother comes to visit. Her analytic nature drives everyone crazy except for Sheldon, giving Penny and Leonard common ground to get very close."@en . . . . . . . . . . . . . . . . . . . . . . . . . . . . "2"^^ . . "Season 3"@en . . . . . . . "15"^^ . . . . . . . . "The Maternal Capacitance"@en . . . . . . . . . . . . . . . "2009-02-09"^^ . . . . . . . "Leonard's mother comes to visit. Her analytic nature drives everyone crazy except for Sheldon, giving Penny and Leonard common ground to get very close."@en . "The Maternal Capacitance"@en . . . . . . . . . . . . . . . . . . "Penny meets Leonard's analytic mother."@en . . . . . . "Season 1"@en .