This appearance is Don Knotts' final on-screen performance.
Don Knotts appears in the "Fez & Jackie Show" as their landlord. In the final scene, he stands near their apartment door and eavesdrops on the conversation about fruit salad, thinking incorrectly that they are talking about sex. This is a nod to the actor's other role as Mr. Furley, the landlord from "Three's Company", who was convinced he'd catch the roommates behaving "inappropriately".
In this episode, Jackie talks about watching The Wizard of Oz (1939). Mila Kunis later went on to appear in Oz the Great and Powerful (2013), a prequel to "The Wizard of Oz."
Allison Munn returns as Fez's girlfriend, Caroline Dupree.
This marks the first episode in which Ashton Kutcher does not appear.