How about a more narrow focus. I was thinking about good drug movies to recommend to a friend. Not well-known recent stuff like Trainspotting or Blow, but lesser known dope flicks. I'll start off.
Panic in Needle Park
Cisco Pike
Puppet on a Chain
Salton Sea
Rush
Spun
Drugstore Cowboy (most mainstream of the list)
The Man With The Golden Arm
Bad Lieutenant
Withnail and I
Fear & Loathing in Las Vegas is my favorite drug movie. Followed by Requiem For a Dream and Spun. I had one more in my head, but lost it.
Traffic was more about the Narcotics Industry than Drug Use, so I can't count that.
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Thinking of cracked-out and/or tweaking whores getting their throats and asses brutalized for the next hit makes me hard. --Rear Admiral