The title of this episode is a play on the phrase "ill gotten gains," which is an idiom referring to wealth obtained dishonestly or illegally.
This episode was filmed off set because a new set - an exact replica of the kitchen used in seasons 5 and 6 but built on a sound stage - was under construction.
This Episode is an Obvious Parody of the 1990 Film 'Misery' Based on the Stephen King Book of the same name.