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Leonard, realizing his pursuit of Penny is fruitless, has an unexpected encounter with a fellow scientist (Sara Gilbert).
Leonard, realizing his pursuit of Penny is fruitless, has an unexpected encounter with a fellow scientist (Sara Gilbert).
More episodes
The Big Bang Theory
S1, EP7 "The Dumpling Paradox"Penny sleeps on Leonard and Sheldon's couch when Wolowitz seduces her friend and takes over her apartment; in need of a fourth member, the guys ask Penny to join their "Halo" team.
The Big Bang Theory
S1, EP8 "The Grasshopper Experiment"On a blind date, Koothrappali discovers that he can talk to the opposite sex after a few drinks, but his date takes an interest in Sheldon.
The Big Bang Theory
S1, EP9 "The Cooper-Hofstadter Polarization"Penny tries to mediate when Sheldon and Leonard disagree on whether to present their joint findings at a physics conference.
The Big Bang Theory
S4, EP14 "The Thespian Catalyst"Sheldon takes acting lessons from Penny in hope of becoming a better teacher; Koothrappali fantasizes about his friend's girlfriend.
The Big Bang Theory
S12, EP24 "The Stockholm Syndrome"Bernadette and Wolowitz leave their kids for the first time; Penny and Leonard try to keep a secret; Sheldon and Amy stick together; Koothrappali makes a new friend; the gang travels together into an uncharted future.
The Big Bang Theory
S12, EP22 "The Maternal Conclusion"Leonard is pleasantly surprised when Beverly comes to visit and she's genuinely kind to him, until he finds out the real reason she's there; Denise and Stuart overstay their welcome at the Wolowitz house.
