Leonard learns the truth about why his mother came to visit on The Big Bang Theory. "The Maternal Conclusion" is the 22nd episode of the show's 12th season.
Amy and Sheldon aren't sure if they should turn in Dr. Pemberton on The Big Bang Theory. "The Plagiarism Schism" is the 21st episode of the show's 12th season.
Koothrappali is worried he won't be taken seriously after publishing a paper on The Big Bang Theory. "The Decision Reverberation" is the 20th episode of the show's 12th season.
Competitors Pemberton and Campbell charm America on a publicity tour upsetting Sheldon and Amy on The Big Bang Theory. "The Laureate Accumulation" is the 18th episode of the show's 12th season.
With Wolowitz in charge, Sheldon and the gang experiment on the kids on The Big Bang Theory. "The Conference Valuation" is the 17th episode of the show's 12th season.
Sheldon: I'll have a diet Coke. Penny: Can you please order a cocktail? I need to practice mixing drinks. Sheldon: Fine... I'll have a virgin Cuba Libre. Penny: That's... rum and Coke without the rum. Sheldon: Yes, and would you make it diet?
