10 Movie Moments Where You Had No Idea What Was Going To Happen Next

10. Introducing Diane Selwyn - Mulholland Drive

If you're watching any David Lynch movie not called The Elephant Man or The Straight Story, you should be bracing yourself for the inevitable moment when the surrealist filmmaker flips the script and upends everything you thought you knew.

Lynch has never pulled this off better than in Mulholland Drive, an already enigmatic yet luridly compelling mystery-thriller which takes a sharp left-turn in its final half-hour, where Naomi Watts suddenly changes from plucky ingenue Betty Elms into struggling actress Diane Selwyn.

The moment Diane wakes up in the very apartment Betty and Rita (Laura Harring) have been investigating, and another character refers to her as Diane, all bets are off.

The remainder of the film is a nightmarish, ambiguous coda which fans have fiercely dissected ever since and Lynch has largely refused to elaborate upon.

Even for the already free-wheeling standards of the inimitable filmmaker, this was Lynch telling the audience, "You thought the last two hours were weird? You ain't seen nothing yet."