KX,
OK, I tried to watch American Psycho keeping the basic HPD criteria in mind. For those of you who (like me) have been living on another continent the past 15 years and missed it...
American Psycho is about a 27-year-old Wall Street exec who can't seem to control the urge to go out and kill people.
He is very much obsessed with his looks, physique and manner of dress, and shows no empathy whatsoever in his dealings with people. (check and double-check!)
I guess murdering people in cold blood counts as a lack of empathy, but I have a hard time seeing how he manages to hack so many bodies, sever so many heads and spill so much blood without so much as staining his Cerruti 1881 suits or breaking out in a sweat. But suspension of disbelief is certainly required in a movie where a mere gunshot at 100 metres is enough to blow a police car sky-high, and leaving a bloody trail behind a body being dragged through an apartment lobby causes nary a stir.
What other clues to HPD can we find?
Low tolerance for frustration? He'll feel like murdering you if he finds out your business card is flashier than his. If you really piss him off, he'll chase you with a roaring chainsaw buck naked though the apartment and down the hall.
Funny, didn't wake the neighbours. Must have been heavy sleepers.
Rapidly shifting emotional states? He goes from nice guy to axe murderer in as much time as it takes to slip on a raincoat so the blood doesn't splash on the suit. (oh right, that's how he stayed clean that one time...)
I could go through the list... but those are the three that pop out the most, and besides, I promised myself I'd spend no more than 20 minutes on this.
If you have absolutely no imagination and need to see a cartoon-like depiction of some but not all of the traits ascribed to those with HPD, then I'd say go rent it.
Otherwise KX, I'm still not convinced that movies are an accurate enough depiction of real life to be of much value in the general discussion of personality disorders. Then again, I've still got a few more movies on your list to check out.