While a good film at the time. The Blair Witch Project has not aged well and it was surpassed and supplanted by the Paranormal Activity franchise.
It was reportedly filmed on a $6,000 budget in under 30 days with rented equipment which was returned to get their money back. The "actors," were only given basic outlines as to where to go and what to say, they improvised the rest and it shows.
I mentioned it before and like a few here, I was hooked 20 minutes in and loved it, but it doesn't hold up upon repeated viewings. I found the clearly one story shack suddenlty having about 10 stories including 3 basements ridiculous, but the ending is still one of my favorites in horror movies.
The Exorcist is my favorite movie and book and I know both inside and out. I'll never forget when I went to the 40th anniversary showing in theaters with a pretty diverse demographic. As expected the teens in the audience laughed here and there, but when the movie got rolling you could here a pin drop. Few movies can captivate such a diverse audience after 40 years... simply magnificent.