Season 9: Episode 10 - The Earworm Reverberation
Posted on Dec 10, 2015 05:00pm

Sheldon has a revelation when he realizes why a song was stuck in his head. Also, Amy invites Dave (Stephen Merchant) over for dinner despite their previously awkward date, and Wolowitz and Koothrappali become obsessed with a fan of their band, "Footprints on the Moon.”