The Big Bang Theory/The Earworm Reverberation
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The Earworm Reverberation is the tenth episode of the ninth season of The Big Bang Theory, and the one hundred ninety-third 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: Stephen Merchant (Dave)
Co-Starring: Yoshi Barrigas (Trent)