The Big Bang Theory/The Gyroscopic Collapse
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The Gyroscopic Collapse is the twenty-third episode of the tenth season of The Big Bang Theory, and the two-hundred and thirtieth episode overall.
Starring: Johnny Galecki (Dr. Leonard Hofstadter), Jim Parsons (Dr. Sheldon Cooper), Kaley Cuoco (Penny Hofstadter), Simon Helberg (Howard Wolowitz), Kunal Nayyar (Dr. Rajesh "Raj" Koothrappali), Mayim Bialik (Dr. Amy Farrah Fowler), Melissa Rauch (Dr. Bernadette Rostenkowski-Wolowitz)
Guest Starring: Dean Norris (Colonel Williams)
Co-Starring: Kimberly D. Brooks (Computer Voice V.O.)