The Big Bang Theory

Series 6 - 6. The Extract Obliteration

The Extract Obliteration
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About this programme

6/24. Sheldon upsets guest star Stephen Hawking when they play an online game of Words with Friends, until Howard advises him to let the scientist win. Elsewhere, Penny enrols in a college class, but decides to keep it a secret from Leonard. Comedy, starring Jim Parsons and Simon Helberg.

Cast and crew


Leonard Hofstadter
Johnny Galecki
Sheldon Cooper
Jim Parsons
Howard Wolowitz
Simon Helberg
Raj Koothrappali
Kunal Nayyar
Kaley Cuoco-Sweeting
Himself (voice)
Stephen Hawking