The Big Bang Theory The Platonic Permutation (Season 9, Episode 9)
TV-PG
TV Episode | 21 min | Comedy, Romance

Primary photo for The Platonic Permutation

The Big Bang Theory

The Platonic Permutation (Season 9, Episode 9)

TV-PG

TV Episode | 21 min | Comedy, Romance

On Thanksgiving, Sheldon and Amy try to spend time together as friends and go to an aquarium, Howard reluctantly agrees to volunteer at the soup kitchen with Bernadette, Raj and Emily, and Penny discovers that Leonard knows more about her ...See moreOn Thanksgiving, Sheldon and Amy try to spend time together as friends and go to an aquarium, Howard reluctantly agrees to volunteer at the soup kitchen with Bernadette, Raj and Emily, and Penny discovers that Leonard knows more about her than she thought. Written by ab1995 See less

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Cast	+ Add Cast
10 cast members

Name	Known for
Johnny Galecki Leonard Hofstadter Leonard Hofstadter See fewer	The Big Bang Theory (2007)
Jim Parsons Sheldon Cooper Sheldon Cooper See fewer	The Big Bang Theory (2007)
Kaley Cuoco Penny Hofstadter Penny Hofstadter See fewer	The Big Bang Theory (2007)
Simon Helberg Howard Wolowitz Howard Wolowitz See fewer	Florence Foster Jenkins (2016)
Kunal Nayyar Raj Koothrappali Raj Koothrappali See fewer	The Big Bang Theory (2007)
Mayim Bialik Amy Farrah Fowler Amy Farrah Fowler See fewer	Beaches (1988)
Melissa Rauch Bernadette Rostenkowski Bernadette Rostenkowski See fewer	The Big Bang Theory (2007)
Laura Spencer Emily Sweeney Emily Sweeney See fewer	Character (2012)
Elon Musk Elon Musk Elon Musk See fewer	Machete Kills (2013)
Wayne Wilderson Travis Travis See fewer	The Mick (2017)