The Big Bang Theory Season 12 Episode 15 The Donation Oscillation ( Air Date 2019-02-07 ) Genre Comedy category. Overview "Penny tries to seduce an abstaining Leonard to ruin his "donation" for her ex-boyfriend, Zack, and his wife, Marissa. Also, Wolowitz, Bernadette, Anu and Koothrappali turn Koothrappali's canceled bachelor party into a couple's trip.".
The Big Bang Theory Season 12 Episode 15 The Donation Oscillation
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- Stars: Johnny Galecki, Jim Parsons, Kaley Cuoco, Simon Helberg, Kunal Nayyar, Melissa Rauch, Mayim Bialik
- Director: John DeChene, Adam Faberman, Rick Puccio, Richard Price, Jamie Hitchcock, Brian W. Armstrong, Shannon Timberlake, Tara Hernandez, Anthony Del Broccolo, Jeremy Howe, Andy Gordon, Alexandra Barbone, Tara Treacy, Linda Cowan, Ryan Berdan, Robinson Green, Justin D. Hetzel, Peter Chakos, Sylvia Surdu, Charlie Back, Faye Woods, Eric Kaplan, Steve Holland, David Goetsch, Maria Ferrari, Todd Morris, Vikki McCarter, Robinson Green, Kristy Cecil, John Greene
