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Sheldon tries to teach the guys a lesson after they cut him out of a potentially valuable investment; a seven-year-old video reveals a secret about Leonard and Penny's relationship.
Sheldon tries to teach the guys a lesson after they cut him out of a potentially valuable investment; a seven-year-old video reveals a secret about Leonard and Penny's relationship.
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The Big Bang Theory
S1, EP10 "The Loobenfeld Decay"Leonard and Sheldon try to avoid seeing Penny perform after hearing her sing, but the elaborate lie Sheldon tells leads to an unexpected result.
The Big Bang Theory
S8, EP5 "The Focus Attenuation"During their weekend in Las Vegas, Bernadette and Amy accuse Penny of being a buzz kill; the guys try to invent the next big thing.
The Big Bang Theory
S8, EP6 "The Expedition Approximation"Raj and Sheldon try to simulate a dark-matter research expedition; after a fight about money, Penny and Leonard turn to Bernadette and Wolowitz for advice.
The Big Bang Theory
S8, EP7 "The Misinterpretation Agitation"The guys try to help when Penny is faced with an awkward dilemma at work; Bernadette and Amy discuss sexuality and female scientists.
The Big Bang Theory
S10, EP13 "The Romance Recalibration"Penny thinks Leonard is taking her for granted and decides to go on a spa weekend with Amy; Wolowitz and Koothrappali try to fix a squeaky floorboard in the baby's room.
The Big Bang Theory
S10, EP12 "The Holiday Summation"Sheldon and Amy visit Penny and Leonard after the holidays and tell them about their terrible trip to Texas.
The Big Bang Theory
S10, EP11 "The Birthday Synchronicity"While Howard and Bernadette welcome their new baby into the world, Amy celebrates her own birthday with Sheldon.
The Big Bang Theory
S10, EP10 "The Property Division Collision"Sheldon and Leonard disagree about how to divide their shared belongings; Koothrappali and Stuart fight to be the most helpful to Bernadette during her final weeks of pregnancy.
