The Big Bang Theory S11E11 · The Celebration Reverberation

The Big Bang Theory

Season 11 · Episode 11 · The Celebration Reverberation · 20 min

Raj and Howard's feud continues as the gang plan Halley's first birthday party. Sheldon's surprise for Amy's birthday goes awry when they get food poisoning. Also, Leonard gets a Christmas letter from his brother that causes him to spiral out about his own lack of accomplishments.