'100 Cult Films: Some You'd Expect, But 'Star Wars'
"If one movie can sum up the definition of "cult film," it would probably be The Rocky Horror Picture Show. 
(Yeah, that is why it's up there at the top of the page.)"
""They've also helped to land the film on a new list of the top 100 cult films of all time. But that list also contains some surprising titles — sci-fi and fantasy mainstays like Star Wars and Lord of the Rings, even family favorites like The Wizard of Oz, It's A Wonderful Life and The Sound of Music."
"So what's "cult" about those movies? NPR's Audie Cornish talked to the two film studies professors who put the list together for their new book 100 Cult Films. Ernest Mathijs teaches at the University of British Columbia in Vancouver; Xavier Mendik teaches at Brunel University in London."