The Big Bang Theory/The Russian Rocket Reaction
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The Russian Rocket Reaction is the fifth episode of the fifth season of The Big Bang Theory, and the ninety-second episode overall.
Starring: Johnny Galecki (Dr. Leonard Hofstadter), Jim Parsons (Dr. Sheldon Cooper), Kaley Cuoco (Penny), Simon Helberg (Howard Wolowitz), Kunal Nayyar (Dr. Rajesh "Raj" Koothrappali), Mayim Bialik (Amy Farrah Fowler), Melissa Rauch (Bernadette Rostenkowski)
Uncredited: Brent Spiner (Himself)