- Big Lipped Alligator Moment: A few, which is curious given the nature of the film;
- In one scene, Daniel Stern's AJ is pursued by one of Wilson's agents with the intent of claiming the evidence he has regarding the CHUD's; Attempting to make a phone call, AJ is stopped by said agent who discharges the money used to make a call and eats it without a word. The camera then holds on AJ staring at the silent agent for about a minute. The agent does later imprison AJ underground to die, but it's still a curious moment.
- In another, George's wife is taking a shower - understandably - after discovering the corpse of the hung dog in the access hatch in her basement. The plughole begins to clog and she attempts to clear it with a hanger; It promptly releases and ejects a spray of blood over her and the shower, which is never explained. Wilson and his agents specifically target the gas and sewer lines to clear up their evidence and the CHU Ds, but how and why something like one of the CHU Ds could be blocking the drains to that extent is never explained.
- Cult Classic
- Memetic Mutation: The term 'CHUD' is usually assigned to any kind of sewer-dweller.
- Retroactive Recognition: The two male leads, George and AJ, are played by John Heard and Daniel Stern, respectively, who are perhaps best known for their appearances in the much-beloved holiday comedy Home Alone.
- John Goodman is one of the cops at the diner.
- Special Effect Failure: Mostly averted. The CHUD creatures themselves are sufficiently creepy and monstrous, and only one encounter between one of the leads and one of the creatures takes place. The effects do, however, possibly look a little ropey when the creature pursuing George's wife starts to extend its neck like a giraffe.