. . . . . . "Dr. Elizabeth Plimpton visits at Sheldon's invitation and she seems more interested in sleeping with everyone rather than visiting Caltech."@en . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . "Dr. Elizabeth Plimpton visits at Sheldon's invitation and she seems more interested in sleeping with everyone rather than visiting Caltech."@en . . . . . . . . . . . . . . . . . "Season 4"@en . . . . . . "3"^^ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . "The Plimpton Stimulation"@en . . . . . . . "Leonard meets Dr. Elizabeth Plimpton. \"Hi-Lo.\""@en . . . . . . . . . . . . "2010-05-10"^^ . . "21"^^ . . "The Plimpton Stimulation"@en . . . . . . . . . "Season 2"@en . . . . . . . . . . . . . .