Fight Club was great because the twist wasn't just a gimmick, it was the soul of the story. It was foreshadowed without revealing and was revealed for maximum impact.
And while many might have seen it, and it's easy to spot once you know to look for it, I went in blind opening weekend and was so caught up with the surface narrative that the twist just sent the story into hyperdrive.
It wasn't so much a 'holy shit, what happened' moment as it was a 'holy shit, I thought I was enjoying this, when I was just sleepwalking through it' moment.
Me, in the theater, already enjoying myself thoroughly.
via Gfycat