The Viewing Party Combustion - S9-E21
Continuity mistake: At the end of the episode, Sheldon, Leonard, and Raj are shouting out the window to Stuart. They are shouting from the window in Sheldon and Leonard's living room, but this makes no sense as Stuart is outside the front of their apartment (you can see the apartment door as he cycles away). These areas are perpendicular to each other; in reality, the living room window would be around the corner of the building from where Stuart is.






Chosen answer: The song is called "Dark as a Dungeon" and was written and first performed by singer-songwriter Merle Travis in 1946. It has been performed by a wide array of artists, including Tennessee Ernie Ford, Harry Belafonte, Dolly Parton, Queens of the Stone Age, Kathy Mattea and Amy Grant. But it was made most famous when it was performed and recorded by Johnny Cash during his concert at Folsom Prison in 1968. According to Wikipedia: "It is a lament about the danger and drudgery of being a coal miner in an Appalachian shaft mine. It has become a rallying song among miners seeking improved working conditions."
Michael Albert