You guys didn't bring up one of the most famous drug films of all time, Fear and Loathing in Las Vegas: https://www.youtube.com/watch?v=uOmtVFQ3WF8 Twelve: https://www.youtube.com/watch?v=N6-M8lXAE8k
This is sort of a hood movie but it is more of a Sci-fi movie, Attack the Block. It's a great low budget sci-fi movies about a bunch of British gangsters beating the fuck out of some aliens, it's also pretty funny. https://www.youtube.com/watch?v=cD0gm7dHKKc