There are unexpected consequences when Sheldon hires a new assistant on The Big Bank Theory. "The Higgs Boson Observation" is the third episode of the show's sixth season.
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The Big Bang Theory Season 6 Episode 3 Quotes

Howard: Attention people of Earth: Tonight, there will be two moons in the sky.

Sheldon: Flattery will not get you this job, Ms Jensen
Ms. Jensen: It's not flattery, if it's the truth.
Sheldon: Oh, well, thank you. Welcome aboard.