The Big Bang Theory/The Bakersfield Expedition
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The Bakersfield Expedition is the thirteenth episode of the sixth season of The Big Bang Theory, and the one hundred twenty-fourth 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 (Dr. Amy Farrah Fowler), Melissa Rauch (Dr. Bernadette Rostenkowski-Wolowitz), Kevin Sussman (Stuart Bloom)