Deader Than Disco: The movie: won a bunch of Oscars, including Best Picture, now known mostly as an object of Hype Aversion. As for the book... The film was breifly mentioned in Chuck Palahniuk's 2011 novel Damned as being a film played on a constant loop in Hell. Ouch.
Ho Yay: The Patient's description of the young Bedouin boy; more subtly, his relationship with Geoffrey Clifton.
Misaimed Fandom: There are people who think the Patient's affair with Katharine was a good idea. Doesn't help that the movie focused so much on that aspect of the story.
Never Live It Down: The film is now remembered almost entirely for being mocked on Seinfeld. You'll have more luck finding someone who can quote "Shut up about the stupid desert and just die already!" than anything from the film itself.