The 70's version, my favorite, although I didn't see the Nicole Kidman version. This movie scared the living shit out of me when I was a kid, and it's still pretty eerie now. I must be particularly susceptible to paranoia-driven horror films, considering how effective I find this one, and some of the other versions, and The Thing. This would be a bad movie to watch while high.
So they called the (pretty good) version from the 90's Body Snatchers, and the (supposedly awful) new version was just called The Invasion. What will they call it if they make another one in a decade or two? What's left? "Of The"?