Watch Penny's masterful drug-pushing pitch at the convention:
In episode " The Conference Valuation " (S12E17), the story splits between a high-stakes pharmaceutical convention in San Diego and a chaotic "science day" back in Pasadena. The Pharmaceutical Convention [S12E17] The Conference Valuation
Back at home, Howard is left alone with the kids and invites the guys over for company. The day takes a turn when Sheldon finds a book on developmental experiments for children. [S12E17] The Conference Valuation