Never, ever watch the remake. I've seen it and it's absolute crap. Although I have also watched the special features, and thus cannot blame the writers or director for that (studio interference, they always seem to think they know better than the people who are actually making the movie).
And you're right, it was John Carpenter's inspiration for Halloween. It was also the inspiration for When A Stranger Calls.
The only part in the whole movie I did not like was how they left Jess alone in the house at the very end. I can understand why they never checked the attic (It actually is proper police procedure to leave that to the CSI team). But Jess was a pregnant woman who had just fought a life and death struggle against a homicidal maniac! She should've been taken to the damn hospital! Instead they take Claire's father to the hospital, and leave Jess all alone in a crime scene! I'm a security guard, so I know a little more about the law & police procedure than the average person. And while I'm far from an expert, one thing I do know is that the only people allowed inside a crime scene after a crime are the police and the CSI team. Civilians, even those who live there or own the property, cannot enter a crime scene until after the CSI team has cleared it, in order to prevent contaminating evidence (that was the procedure even back in '74, before DNA technology was discovered).
With all the pains they took to make the rest of the police work as realistic as possible, you'd think they'd at least get that right. And it would have been just as creepy if we saw the trap door to the attic open and heard Billy's voice if the house was empty. Maybe have him sing that lullaby he sang after killing Claire instead of saying "Hey Agnes. It's me, Billy."