The Wizard of Oz

The Wizard of Oz is a novel that spawned several film adaptations.

References to The Wizard of Oz in The Simpsons

Season	Episode number	Episode name	Reference
3	38	"When Flanders Failed"	Homer asks Ned if The Leftorium is in "the merry old land of Oz".
42	"Treehouse of Horror II"	When Mr. Burns is scooping out Homer's brain, he hums "If I Only Had a Brain" from The Wizard of Oz.
11	231	"E-I-E-I-(Annoyed Grunt)"	At the movie theater, when Homer has butter put on his Milk Duds to the point of overflow he says "Swim, my pretties," a parody of the Wicked Witch of the West's call to her flying monkeys in The Wizard of Oz: "Fly, my pretties:". (This line isn't actually said in The Wizard of Oz, but Homer is relying on popular understanding.)
12	265	"Simpson Safari"	One of the pictures in Joan Bushwell's "Serious Research" book is of The Wizard of Oz.
13	278	"Jaws Wired Shut"	When Homer is twirling Maggie around by her pacifier, the music playing is the music from the tornado scene in 'The Wizard of Oz.
21	450	"Thursdays with Abie"	Instead of the usual music of the choir singing "The Simpsons," the "Miss Gulch/Wicked Witch of the West" theme from the 1939 film The Wizard of Oz is heard as Agnes Skinner rides her bicycle across the title.
23	496	"Politically Inept, with Homer Simpson"	The "Liberal straw man's song" is a parody of "If I Only Had a Brain" from The Wizard of Oz.