The Big Bang Theory (2007)
S9E10 The Earworm Reverberation
Episode Overview
Sheldon has an epiphany about why a particular song won't leave his mind. Meanwhile, Amy decides to invite Dave over for dinner, putting aside the memories of their uncomfortable date. At the same time, Wolowitz and Koothrappali find themselves captivated by a devoted fan of their band, "Footprints on the Moon."
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S9