This story is loosely based on Act 3 of Episode 409 of the "This American Life" radio program hosted by Ira Glass.
The song Bethany is playing on her cello as part of their "sing-a-long" is Zombie by Irish band, the Cranberries. It was a protest song written by their lead singer, Dolores O'Riordan, in memory of the two young victims of the 1993 Warrington bombings. Zombie was released on 19 September 1994.
Bethany (Melissa Rauch) mentions she is sexually attracted to Bob Newhart. Both were in The Big Bang Theory
Both Martin Freeman and Jake Lacy are in versions of The Office. Freeman in The Office UK as Tim Canterbury and Lacy in The US Office as Pete Miller