Fight Club
Apart from the many extras, 20th Century Fox Home Entertainment's incredible 2-disc special edition of 'Fight Club' also contains some hidden features.
On the main menu of the first disc of the box set, select 'Special' and then press the 'Up' arrow key and you will highlight a Smiley face. If you press 'Enter' now, you will get to see two credit screens for the release.
From the main menu of the second disc - the one with all the extras - go to the 'Advertising' section. If you press the 'Down' arrow key on your remote control three times, another green Smiley face will appear right underneath the 'Promotional Gallery' entry. Now, press 'Enter' and you will be taken to a section where you can scroll through a catalog of Fight Club merchandising. All the items have amusing anecdotes accompanying them, similar to the style of the press kit.
You may also want to keep your eyes open for a text message by Tyler Durden at the very beginning of the film. The screen actually looks like the FBI warning but upon examination, it turns out to be Tyler Durden's Homework Assignment'...