Ghostbusters
Who ya gonna call? The first time this song was played, it was a tribute to John Funkhouser, the Berklee professor that taught the class that Aaron, Eric, and Luke met in: “When you can’t hear / Re from Do / Who ya gonna call / Funkhouser”. Its made several obscure, always unexpected appearances since, usually mid-jam.
Check out Hewis Lewis and News’ I Want A New Drug for an interesting similarity.