 The title of “ Hex and the City ” is based on the title of the television show Sex and the City . The segment contains a background character who looks similar to the main character from Caps For Sale , a 1938 children ’ s book about a cap salesman who wears all his hats . Cedars @-@ Sinai is a hospital in Los Angeles . One of the bunnies jumping into the pit that Bart and Homer dug is Bongo , the one @-@ eared rabbit character from Simpsons creator Matt Groening ’ s comic Life in Hell . Among the creatures Bart and Homer find in the pit is journalist and news personality Katie Couric , as well as a pixie resembling Tinkerbell . The priest at the leprechaun and the gypsy ’ s wedding is Yoda , a character from the Star Wars franchise . Maggie turns into a ladybug similar to The Metamorphosis . The plot of “ House of Whacks ” is based on the science @-@ fiction film 2001 : A Space Odyssey by Stanley Kubrick , with Ultrahouse acting as a reference to HAL 9000 , the antagonist of the film . The Ultrahouse ’ s fascination with Marge was inspired by the science @-@ horror film Demon Seed by Donald Cammell . The Ultrahouse wears gloves similar to those worn by Mickey Mouse . To attack Homer , the Ultrahouse uses , among many other weapons , an automatic hammer resembling the one Homer invented in the episode “ The Wizard of Evergreen Terrace ” . “ Wiz Kids ” bases its plot on the Harry Potter books written by J. K. Rowling , who would later make a guest appearance in the episode “ The Regina Monologues ” . 
