The Celebration Reverberation is the eleventh episode of the eleventh season of The Big Bang Theory.
Sheldon prepares a Little House on the Prairie dinner for Amy in preparation for her birthday. However, both of them suffer a severe case of food poisoning. Meanwhile, Howard asks his estranged best friend Raj to help him plan for Halley's first birthday.
Howard, Leonard, and Sheldon are in the comic book store, when Sheldon asks Stuart if he has the new Aquaman comic and whether it's okay for him to use the back room to smoke some meat so he can make dinner for Amy's birthday. Howard says that because Halley is just one year old, Bernadette is on bed rest, and he's lazy, they're not doing anything big. Raj shows up, and goes to another comic book rack, clearly indicating that his estrangement from Howard is still going on. Stuart attempts to convince them to stop fighting, to no avail, as Raj explains that he is giving the extra ticket for the new Star Wars movie, that he originally intended to give to Howard, to Stuart instead.