Rewatched The Exorcist (I've only seen it twice) -- theatrical cut.
The first time I watched it, I was disappointed because it simply wasn't scary to me / seemed kinda eh. This time I watched it as a drama and it was better -- the scenes that aren't scary are actually still unsettling, and there's lots of tone-setting sequences.
I feel like there's a better film in here somewhere, if they had brought a little more consciousness to the issues with Karras and his mom for example, or what Regan's mom might be experiencing as a single mother in an unfamiliar place. The film never quite gets into their heads. There's enough to understand why Karras might have acted as he did by the film's end, it just never QUITE pulls it together to make it pack an emotional wallop. it's also weird seeing medical procedures from the time -- I guess the machines there were the precursors to the tube CAT scans?
ALso, I agree with Blatty (and not Friedkin) that while there's something to be said about the moment of silence between the two priests on the steps (there's a feeling of abandonment and despair there), cutting the dialogue removed the heart of the film. Friedkin said he thought the whole point of the possession was obvious, but uh no, dude -- when I watched a bit of the deleted sequence, it was the missing key because the whole time I'm like what does a demon from the middle east have to do with a little girl in Wash DC? It wasn't obvious as he had said; Blatty was correct as far as that scene goes. It would have made the film more coherent to keep it. (I'm seeing rehashes of Prometheus now, another case where the director overedited his film and removed some linchpin sequences.)
Linda Blair has a kind of over-effected delivery like a child actress would have traditionally, no issues with it really. I get a kick of seeing Burstyn so young (although she's 40 or so in this film), I'm mostly family with work from the mid-1990's on.