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The Big Bang Theory
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The 21-Second Excitation
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The 21-Second Excitation - Cast Appearances
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Cast Appearances
Crew Appearances
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Johnny Galecki
as
Leonard Leakey Hofstadter
Jim Parsons
as
Sheldon Lee Cooper
Kaley Cuoco
as
Penny
Simon Helberg
as
Howard Joel Wolowitz
Kunal Nayyar
as
Rajesh Ramayan Koothrappali
Mayim Bialik
as
Amy Farrah Fowler
Melissa Rauch
as
Bernadette Marianne Rostenkowski
