These are what we call the 'YMMV items.' Things that some people find in this work. We call them 'your mileage might vary' because not everyone sees these things in the same way. This starts discussions in the trope lists, a thing we don't want. Please use the discussion page if you'd like to discuss any of these items.
Award Snub: Laura Dern didn't receive any recognition from The Academy for her starring role in this film which brought about a good backlash on the internet from viewers that believe she at least deserved a "Best Actress" nomination. Critics agreed, calling it possibly the best performance in her career.
Mind Screwdriver: sort of (it's in the movie, not in bonus material). in a possible pun version: a lady in the movie thinks she has been hypnotized to kill someone, she is asked what she is going to use as a weapon, she replies that she is going to use a screwdriver. If you can just figure out what the screwdriver might represent (hint: not a literal screwdriver) along with who this killer is, and their relation to the target of the murder, the mind screw of at least some of the film may be explained.
Nightmare Fuel: The whole movie. David Lynch seems to specialize and making things creepy that shouldn't be creepy, and this movie could be called Nightmare Face: The Movie. The whole thing is packed to the brim with Jump Scares, Hell Is That Noise, and Surreal Horror. And while the whole film is full of Nightmare Faces, the one in the climax (if you've seen it, you know the one) is an example. As mentioned under Dream Sequence, the film is quite possibly the closest a film will ever come to emulating a dream, and much of the horror comes from the realistic and striking resemblance of a terrifying dream that you can't escape. It's considered by some to be one of the most terrifying films ever made.