It is coming on IFC a few times next month. They have this type movie of Saturday nights occasionally. I just caught The Hills Have Eyes on there a couple of weeks ago.
(http://www.briandepalma.net/images/sisfull.jpg)
I have this on DVD. It is one of Brian DePalma's best movies. Like all of his movies, it is a bit contrived and it copies Hitchcock, but it has a few very suspenseful moments.
I saw it years ago on TV, and it grew on me. It's worth a look and certain better than most of the stuff De Palma has done over the past 10 to 15 years.
I wish he were the cinematopgrapher for other directors rather than a director himself. His films all look great, but so many of them have pretty images and nothing original or worth paying attention to as far as acting or plot since he is so derivative of Hitchcock and others.
Not to jump too far off topic, but there's a great (serious drama) flick about "siamese twins" called "Twin Falls Idaho." It's a fantastic movie. You guys might want to check that out.
It grew on you, hahahahah. I wish the same thing about the Frankenweenie guy, except that I love "Pee Wees Big Adventure".