Watch The Big Bang Theory Season 8 Episode 20
When Sheldon and Amy build a blanket fort, they come to major crossroads in their relationship. Also, Wolowitz meets the half-brother he never knew he had, and when Penny is invited to appear on Wil Wheaton’s podcast, she and Leonard have a huge, on-air argument.
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Series: The Big Bang Theory
Director: Mark Cendrowski
Guest Star: Kevin Smith, Matt Bennett, Rena Strober, Wil Wheaton
Episode Title: The Fortification Implementation
Air Date: 2015-04-09