I happened to be looking at the Wikipedia article for Keyser Soze today, and saw this:
In his 1999 review of Fight Club, film critic Roger Ebert commented that "A lot of recent films seem unsatisfied unless they can add final scenes that redefine the reality of everything that has gone before; call it the Keyser Söze syndrome."
So naturally, I tried to think of films besides Fight Club and The Usual Suspects that do that. The only ones that leap to mind are The Sixth Sense and Unbreakable. The Village comes close, but the twist arrives earlier than at the very end of the film.
Am I missing any outside of the Shayamalan oeuvre? I recall hearing that Vanilla Sky had a twist, but I haven't seen the film so I don't know if it qualifies by having a reality-redefining twist.
For our purposes, let's only consider films after The Usual Suspects (1994). And please, no spoilers.