Trivia: There are 133 F-words in this movie.
Trivia: The first time they filmed the part with Josh's teeth and flannel in the sticks, the directors had left it outside the tent, not telling Heather. When she got up in the morning, she picked up the bundle of sticks and threw them off to the side without looking at it. They had to contact her and re-shoot it.
Trivia: Writers and directors Myrick and Sanchez were catapulted into stardom and prosperity due to the success of The Blair Witch Project. In an interview, the question was raised: exactly how rich were these two men? One responded, 'I'm not allowed to say, but I'm looking at houses for the first time in my life.'
Trivia: After its release in 1999, "The Blair Witch Project" went on to make a fantastic $250 million profit on its lowly $64,000 budget, largely due to the film's realism; audiences were chilled by the possibility that this "found footage" was the real thing. But any cable viewers who followed the Independent Film Channel (IFC) knew very well that "The Blair Witch Project" was a purely scripted work as far back as 1997, when "The Blair Witch Project" writer/director Daniel Myrick previewed a segment of the work-in-progress featuring an 8-minute "pitch" (comprised mainly of voice-overs and edited footage) on IFC's specialty program, "Split Screens." Audience feedback was later gathered through traditional test-screenings.
Trivia: The characters Heather and Josh, originally had a much more antagonistic relationship during filming, much like Heather and Mike do in the final film. However, most of Heather and Josh's arguments were cut during editing because the directors felt it came across as too mean-spirited to have both men constantly "ganging up" on Heather and arguing with her.
Trivia: When Heather screams "What the f*** is that?", you can't see anything in the darkness. This was unintentional. They had a crewmember wrapped head-to-toe in white, and as Heather ran by, he charged towards her. The theory was that in the dark, the cameras would only just barely see his white clothes, making him look like a spectral figure. But it was so dark the cameras didn't pick him up. The directors decided it was far scarier to not see anything, so they didn't reshoot it.
Trivia: The film was originally meant to be a full-on fake documentary, with the "found footage" only being part of it, and the rest of the film being interviews with family, friends, and authorities. However, the "found footage" was so chilling, the directors decided it would be the entire film. The original "fake documentary" concept was then turned into a tie-in TV special called "Curse of the Blair Witch," which aired around the same time the movie came out.
Trivia: The scene where all the actors realised they were walking in a circle all day was not in the original script. They were all really angry when they had found out they had walked all day for nothing.