Fight Club is 1996 novel by Chuck Palahniuk, chronicling an anonymous protagonist who is struggling with a growing discomfort with consumerism as a way of life, and with changes in the state of masculinity in American culture. To overcome this, he establishes an underground fighting club as radical psychotherapy In 1999, director David Fincher adapted the novel into the Fight Club movie, starring Ed Norton and Brad Pitt. The movie became a pop culture phenomenon, yet, in the wake of the movie's popularity, the novel — the first published by the writer — then was criticized for its content, and mainly for explicitly depicting violation.
There are some rules of Fight Club:

1. You don't talk about fight club.
2. When someone says stop, or goes limp, even if he's just faking it, the fight is over.
3. Only two guys to a fight.
4. One fight at a time.
5. They fight without shirts or shoes.
6. The fights go on as long as they have to.
7. If this is your first night at fight club, you have to fight.
8. You don't ask questions.
9. You don't ask questions.
10. No excuses.
11. No lies.
12. You have to trust Tyler

Great movie also, you should see it once.