The Celebration Reverberation

"The Celebration Reverberation" is the eleventh episode of the eleventh season of the sitcom The Big Bang Theory. The episode aired on December 14, 2017.

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

Extended Plot
Sheldon making a themed birthday celebration for his girlfriend Amy (Little House on the Prairie themed) that doesn't go well (they get ). It was fun and cute.

Howard is making a for Halley and asks for Raj's help (tension between them since previous episode, but they kind of make up in the end).

Leonard and Penny had I would say a sub-plot since it did feel a little shorter than 2 other ones, but it might feel different in the aired episode. Leonard's brother sent them a and Leonard was annoyed that his brother was (unintentionally) bragging about all his achievements this year and he tried to think up of all the cool things he and penny did this year but he could think of nothing. He was really bothered by that but Penny wasn't, she was like - "We're happy, what are you worried about?"

Thanks to report by Brilliantfool.

Credits

 * Guest starring:
 * Kevin Sussman as Stuart
 * Pamela Adlon as Halley (Voice Only)
 * Teleplay: Dave Goetsch, Maria Ferrari & Jeremy Howe
 * Story: Steve Holland, Eric Kaplan & Alex Ayers

Critics
To be entered.

Trivia

 * This episode will be the third time that Amy's birthday is celebrated. (Coitus or party).
 * This is the first on screen appearance of Raj's new apartment.
 * Howard and Bernadette conceived Halley on Sheldon's. Sheldon and Amy had revenge by having sex in Howard and Bernadette's house on Halley's birthday.

Quotes
To be entered.