Many good ones were already mentioned

But from memory:

• The snatch
• The big Lebowsky
• Clerks
• American Psycho
• 2001 a space odissey
• Blade Runner (possibly the directors cut)
• Apocalypse now (possibly the redux version)
• Full metal jacket
• The godfather (first 2 movies, the rest is not as good)
• Fight club
• Alien
• The Truman show
• In the mouth of madness
• They live
• The terminator (first 2)
• Animal house
• the dollar trilogy from Sergio Leone
• Once upon a time in America
• pulp fiction
• reservoir dogs

Very useful rules, I see… impossible to bypass :-)