The Big Bang Theory

Season 11 Episode 11

The Celebration Reverberation

Aired Thursday 8:00 PM Dec 14, 2017 on CBS
7.9
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48 votes

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Episode Summary

EDIT

Sheldon and Howard plan birthday celebrations for Amy and Halley, respectively. Also, Leonard receives a Christmas letter from his brother that causes him to spiral out about his own lack of accomplishments.

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