Alternative Character Interpretation: There isn't much evidence that Verbal Kint is Keyser Söze that doesn't come from the movie's Unreliable Narrator. Because of how much we don't know about what happened, it's quite possible that he's just a conman trading on the name and reputation of a legendary crime lord to get what he wants.
Eight Deadly Words: In Roger Ebert's famously negative review of the film, in description of the film's complex plot he wrote "To the degree that I do understand, I don't care." Ebert is one of the few critics who did not like this film at all, and put The Usual Suspects on his most hated film list.
Esoteric Happy Ending: Inverted. Initially, the film might come off as having a Downer Ending, with Verbal getting off scott-free and escaping just before Kujan twigs on... but the authorities now know what Keyser looks like. Considering Verbal's entire goal was to kill a man who could identify him, and also taking into account Dave Kujan's more obssessive tendencies which pretty much guarantees he will always chase after him even out of spite alone, it looks like he might not be in the clear just yet...
Evil Is Cool: Keyser Söze is clearly a monstrously evil man if even half of the things said about him are true, but his coolness in doing them is indisputable, particularly given the famous twist ending has made him a by-word for the Diabolical Mastermind.
It's impossible to view the film the same way after Bryan Singer and Kevin Spacey were both hit with numerous accusations of molesting young boys. Especially uncomfortable because Kobayashi pretends to threaten Verbal's nephew with castration if he doesn't follow along Soze's plan.
When you think about it, Kevin Spacey being revealed to be rotten all along is pretty much what happened in real life, too.
Several times Söze is referred to as the Devil. The main character (and one of the prime suspects as to who Söze is) later played the Devil in End of Days. One of his minions in the latter is played by "Hockney" (Kevin Pollak).