Aired: December 11, 2015 | Season: 9 | Episode: 10
Overview
Runtime: 21m
Directed by: Mark Cendrowski
Written by: Jeremy Howe, Steve Holland, Steven Molaro
Guest stars: Stephen Merchant, Yoshi Barrigas
Description
Sheldon has a revelation when he realizes why a song was stuck in his head. Also, Amy invites Dave over for dinner despite their previously awkward date, and Wolowitz and Koothrappali become obsessed with a fan of their band, "Footprints on the Moon."
Season 9 Episode 9
The Platonic Permutation
Season 9 Episode 11
The Opening Night Excitation