Audio problem: Each time George mentions Millie's older brother Luke, the movements of her mouth don't match what's being said. It appears that the name was changed and then dubbed afterwards.
Continuity mistake: Dolores walks to the computer and tells Georgia "Apparently Stinky5000 votes for 'Ferns and Flowers'." The first look we get at the screen shows the message "Could you tell us what the dog's name is?" and nothing else. The next two glimpses of the screen we get shows "You forgot to put detergent into the dishwasher" and nothing else. It's after the next cut that Dolores says Hungrygirl wants to know the dog's name. As Dolores walks away from the computer, we get a last look at the screen. You can see Stinky5000's message "I vote for "Ferns and Flowers'" appearing on the screen. (00:29:40)
Continuity mistake: When Guggenheim is sitting on the bench after he dies, he reaches for the pink index card and his fingers pass through it. But then how did the index card get to the bench? He had it when the gas tank hit him, so it could make sense if he still had it "with" him, like his clothes, but if he can't touch it now, then it should have stayed with his body, inside the building.
Factual error: Towards the end of the episode, Mason reads a report on Daisy's death indicating she died 13 December 1938 in Marietta Georgia of smoke inhalation. It apparently was common knowledge that Daisy died on the set of Gone with the Wind (supported in the Halloween episode by someone who knew her when she was alive). The filming of the big fire scene in GWTW was 10 December 1938 so the dates are pretty close. But these early parts of the production of GWTW (and I believe the rest of the movie as well) were filmed in Culver City, CA, not Marietta. (00:34:50)
Other mistake: In the copy room, George, after she speaks with Daisy in voice over, says "its 3am", but the clock on the wall behind Crystal shows 12:35 when George talks to Crystal.
Continuity mistake: When the reapers are inputting the data, they are only typing in the final thought. However, in every shot of the spreadsheets, there are entries for final thought, name, date, and location.
Chosen answer: The Song is Callled "Boom Boom Ba" and is by the band Metisse. it plays at certain points during the series. Mainly when George is looking over Reggie or in Reaping Havoc where it plays whilst shes showing her scrapbook "Mysterious and Reassuring" which is what she thought Betty was.