Neuromancer/YMMV

Complete Monster: Riviera. Case and Molly are criminals and rather amoral, but Riviera seriously gets his jollies off on the vile things he does.
Hilarious in Hindsight: The book came out over a decade before the Metal Gear series became popular. Reading it today, the inclusion of a genetically enhanced super ninja named "Hideo" is pretty funny.
Les Yay: At first, Lady 3Jane appears to be giving Molly a Creepy Physical when she gets injured, but this comes across more like Intimate Healing than anything else.
Magnum Opus Dissonance: Because it was so influential, it's Gibson's most famous and acclaimed work. But in terms of literary merit, Gibson considers it one of his weakest. To be fair, it was the guy's first novel. His later novels would have much more focus on plot and characterization.
Seinfeld Is Unfunny - Every other cyberpunk work done after Neuromancer was released used it as a base, even by copying the terms at times. Combined with Science Marches On and the rise of the Internet, it can make some of the book's elements feel rather dated to the modern reader.