* EpilepticTrees: Fans have gone on for pages and pages debating what is attacking the main characters in the movie.
* HellIsThatNoise: The child-like giggling noises in the woods.
** [[https://www.youtube.com/watch?v=b6ycnnA2R6s "The Cellar."]]
* HilariousInHindsight: At one point, Heather asks "[[TheStoner Where's the weed?]]" When her actress, [[TheDanza Heather Donahue]], dropped out of acting, she got work as a legal grower of [[GranolaGirl medicinal marijuana]].
* HypeBacklash: Although by most standards it is a very good movie, people expecting to be given heart attacks on the spot might be disappointed if they've heard too much about it.
* LoveItOrHateIt:
** In spite of good reviews and having its fans, some didn't like the movie upon its release. In fact, the first film was nominated for Worst Picture by the Golden Raspberry Awards and Heather Donahue even won for Worst Actress.
** There is some argument that audiences who love the movie and audiences who hate the movie are split by those who live in suburban or rural areas and could relate more towards local urban legends, people disappearing, scary woods, and those who live in the city and wouldn't have any association with those things.
* {{Narm}}: Heather's apology is a chilling scene, but the booger hanging off of her nose has taken more than a few people out of it. ''Film/ScaryMovie'' parodied it by having a geyser of snot pouring out of Cheri Oteri's nose during [[https://www.youtube.com/watch?v=C1_MYTNGxm4 its take on the scene]].
* NightmareRetardant: If the film scared you, watch it with the DVD commentary and that'll quickly change. The producers all goof around discussing things like getting the rights for the groceries in the movie, Josh being "abducted" so early because he had to go to work on the third day of filming in the woods, and how the actors tried to jokingly catch them on camera when making noise in the middle of the night. The creepy image of the children's hand-prints on the halls of the old house is a bit hard to take seriously when the producers talk happily about bringing a gaggle of kids in in and just how much fun they had smearing their handprints all over the walls.
* ParanoiaFuel: Try going to the woods after watching this movie and not feeling like something's watching you...
* RewatchBonus: A lot if you check out the tie-in materials and backstory. If you know a certain aspect of the Rustin Parr story, [[spoiler:(that he marked the graves of the people he killed with piles of stones),]] then you'll discover that the characters were doomed from the start.
* SeinfeldIsUnfunny: In these days of dime-a-dozen "found footage" horror movies, it can be pretty hard to remember just how innovative the gimmick was in 1999.
* SignatureScene: The apology scene, quoted atop the work page, in which the camera focuses on half of Heather's face as she stammers through an apology, alone and scared out of her mind.
* SpecialEffectFailure: A special variant of this occurs in the 'extra found footage' sometimes called a deleted scene. It's supposedly part of the documentary footage, but it's ''much'' clearer than the film in the original footage, and the actors ''really'' don't look like they've been under the same [[EnforcedMethodActing physical circumstances they were in during the making of the film proper]].
* TheProblemWithLicensedGames: There were three ''Blair Witch'' games made using the ''VideoGame/{{Nocturne}}'' engine, with the first one tying into that game as well. The general consensus is that [[ZigZaggedTrope the first game is good, the second lousy and the third is all right.]]
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