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.
YMMV: The Incredible Shrinking Man
Freud Was Right: Scott is terrorized by a giant cat. And what's slang for a cat and female genitals? Could be seen as women threatening manhood, especially because this is post-WWII/Rosie the Riveter.
Jerkass Woobie : Scott in the later part of the film. He pretty much admits that he's becoming a jerk the smaller he gets. However, considering what he's going through, it's hard to be but so angry at him.
Nightmare Fuel: Scott's battle with the spider. Even though the film was made on a shoestring budget, the scenes with the spider are very, very creepy and undoubtedly were intended to be scary. It is indeed very scary even over fifty years later.
Visual Effects of Awesome: Even though it was on a shoestring budget, the effects (especially for a film from 1957 and in black and white) are fairly impressive. There's an occasional "scale" problem, but most of the time, it's done very well. In fact, the fight with the spider is done a little too well!