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Looking to watch The Big Bang Theory Season 4 Episode 6 online? TV Fanatic is your destination for every paid and free streaming option of the The Big Bang Theory S4E6 full episode from 2 affiliates.

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Episode Details

The Big Bang Theory Season 4 Episode 6: "The Irish Pub Formulation"

A major secret abounds this week, as Leonard keeps quiet about an affair with Raj's sister. Will Sheldon keep the secret?