The test screening process is a nebulous part of studio filmmaking. Some directors and producers swear by it, but in other cases, it's the bane of a filmmaker's existence. With so much money on the line, most studios reserve the right to choose the final cut of a film, which can be hugely influenced by preview audiences' reactions.
Endings seem to be particularly fluid when it comes to test-screening feedback and there are countless stories of movies ending differently as a result of how a sample audience have reacted to a preview screening. We've collected 32 examples here, ranging from the infamous to the less discussed, and even one very recent film.
