Watch The Big Bang Theory Season 8 Episode 20 : The Fortification Implementation Full Episode Online

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.

Genre: Comedy

Air Date: 2015-04-09

Season Number: 8
Episodes Number: 20

First Air Date: 2007-09-24

Last Air Date: 2019-01-10

Runtime: 22 min