You know that moment when you're watching a movie and all of a sudden - WHAM! The filmmaker does the unthinkable and delivers a sting that you never saw coming. Up is down, down is up, and it's highly likely that Kevin Spacey is involved. Welcome to the twist ending, folks! Handled badly, a twist can be cringe-inducing and sometimes even totally ruin the movie. But when utilised by a skilled filmmaker, that shock and surprise can make a good movie into a great one. Read on to see my picks for the 25 best twist endings I've ever seen. Be warned: there are ALL THE SPOILERS ahead.