- Epileptic Trees: One of the more bizarre interpretations on the IMDB forums suggested that no-one in the film existed except Marshall, and that Brooks (and every other character and event) was a product of his imagination. The lengthy debate that ensued was hilarious in its absurdity.
- Evil Is Cool: Subverted. "Smith" thinks this about Brooks, despite Brooks consistently attempting to dissuade him of the notion.
- Idiot Ball: "Mr. Smith" grabs this early, and never lets go. He knows that Mr. Brooks is a very successful serial killer, yet takes almost zero steps to ensure his own safety. He depends on the photos he took to be his paper shield against Mr. Brooks, even after Mr. Brooks demonstrates just how easily he can get to Mr. Smith. Then, he leaves a large puddle of DNA behind at a crime scene, not once thinking to clean it up in any way, nor does he discuss it with the serial killer he accompanies. It is a wonder that "Mr. Smith" expected to survive the encounter at all. He does bring a pistol with him, expecting to use it against Mr. Brooks, but then ignores the dialogue where Mr. Brooks is discussing the gun he has on him. His later murder is almost anticlimactic, as the audience already knows how this is going to end.
- Magnificent Bastard: The eponymous Mr. Earl Brooks is a brilliant, charming Serial Killer addicted to murder who seeks to quench his thirst for blood. Attending AA meetings to cope with his addiction while simultaneously running a prospering box factory he built from the ground up, Brooks gives into his murderous inclinations now and then yet is never caught, having been killing for decades without suspicion. When the crooked, pathetic "Mr. Smith" tries to blackmail Brooks, Brooks twists Smith into his personal pawn and, after neatly tying up a variety of loose ends, effortlessly enacts a Xanatos Gambit that ends the film with Brooks escaping all of his crimes, which are pinned on Mr. Smith.
- Retroactive Recognition: Years later, Jane Brooks would become Killer Frost.
- "Seinfeld" Is Unfunny: Dexter fans may be surprised/accustomed to see a serial killer story involving the attending of AA meetings and later the discussing of hiding a body under a thin layer of dirt in a yet-to-be-used cemetery grave.
- Special Effects Failure: Towards the end of the movie, Brooks is holding a glass of milk that varies in fullness, somehow gaining more as he goes upstairs before disappearing entirely.
- Trapped by Mountain Lions: Much of the Demi Moore subplot, up until the point where it crosses over fully with the real story, is so divorced from the main action that it almost feels like a separate film.
YMMV / Mr. Brooks