The first time I saw this movie was on the Sci-Fi channel, and I knew I had to have it. I went out to Wal Mart and bought it(no offense to amazon).It scars the mind with it's plot: the ultimate form of paranoia. Even for the early 1980's, the special effects gave it a convincing look. Entertainment Weekly published an issue which gave the top 25 scariest movies ever made, and this ranked number twelve.It scared me so much, that I waited a few weeks after buying it before watcing it again. There was one thing I hated, the end.