Revealing mistake: During a few of the "flaming fart" scenes, you can see a wire connected to the bottom of the actors. It's hard to see because it appears that it was attached to their legs in some way, but you can still see it when they move around a lot. The easiest place to see it is when the "devil" knocks on the door and they all fart and jump around, look carefully between/to the side of eddies legs for a black wire. It's not the dressing gown belt because that's tied around their waists.
Continuity mistake: Eddie says that the fairground music reminded him of his dads funeral. But in many of the other episodes Eddie says that he has no idea who his father was.
More quotes from Bottom
Trivia: Perhaps an odd bit of Trivia, but Dr. O'Grady's treatment ("have your personal organ enhanced so that it comparable in size to a fully grown mountain gorilla") is not as big a ripoff as it sounds. A fully grown gorilla has an erect penis length of around 1.5 inches (on average).