Fight Club was 1999's most unlikely success story. Though the casting directors managed to nab Edward Norton, Helena Bonham Carter and Brad Pitt to lead the story, they took a gamble on each being their third or fourth choice for the role.

Of course, the rest was history. director David Fincher brought Chuck Palahniuk's incredible 1996 novel to infamy with unparalleled performances around the controversial - violence, iniquity, mental health and beyond.

But what don't you know about the cult film?

1. Director David Fincher claimed in an interview that there is a Starbucks coffee cup in every scene, other than the one in which a coffee shop is destroyed.