Gæt en film udfra dens trivia på Imdb:
1. Many writers refused to work on the project because of the subject matter.
2. The film's ad campaign warned citizens to take special note of any odd occurrences happening around them.
3. One of the films included in "The Fifty Worst Films of All Time (and how they got that way)"
4. Included among the American Film Institute's 2001 list of the top 100 Most Heart-Pounding American Movies.