★ 7.0mind-bending
Denis Villeneuve's 2013 psychological thriller follows a withdrawn history professor who spots his exact double playing a bit part in a rented movie -- and the closer he gets to the man, the less the film is willing to explain. It's one of the strangest, least-resolved endings this site covers, and that's entirely by design.
★ 8.0moderate
Christopher Nolan's 2010 heist film follows a thief who steals secrets from people's dreams, hired for a job that requires planting an idea instead. The way the film chooses to end its own story -- and what it deliberately refuses to confirm about the man at the center of it -- has kept audiences arguing for over a decade.
★ 8.0mind-bending
David Lynch's 1997 neo-noir starts as a tense story about a marriage curdling into suspicion and ends somewhere else entirely, after the man at its center stops being the man at its center. This is not a film that hands you a solution -- it hands you a loop, and dares you to find the seam.
★ 7.5moderate
Two garage engineers accidentally build a box that folds time, then start using it to get ahead on stock trades. What they do with it after that is deliberately difficult to track on a single viewing -- the film has no intention of making it easier for you.
★ 9.0mind-bending
A U.S. Marshal's investigation into a vanished patient at a remote island asylum keeps circling details that don't add up -- migraines, missing files, a staff that seems to be managing him rather than assisting him. Martin Scorsese builds the whole case on ground that doesn't hold, and the twist is in how long it takes to notice.