I was going to go genre by genre, but I'll just throw some out instead.
Rolling Thunder, The Endless Summer, The Last Hunter, Reefer Madness, Pink Flamingos, Black Caesar, The Black Godfather, Blacula, The Black Gestapo, Coffy, Foxy Brown, The Mack, Superfly (just any blaxploitation) The Harder They Come, Dancehall Queen, Shottas, Thrid World Cop, The Blue's Brothers, Over The Edge, Happiness, Welcome To The Dollhouse, Tremors, Miami Blues, The Adventures of Buckaroo Banzai Across the 8th Dimension, Mad Max (1 and 2), The Warriors, The Wanderers, The Gods Must Be Crazy, Harold And Maude, Escape To Victory, Get Carter, The Long Good Friday, Man Bites Dog, They Live!, The Thing, Maximum Overdrive, Les Vampires, Irma Vep, Death Race 2000, anything by Fred Olen Ray, Heathers, Bad Taste, Creepshow, anything by Andy Warhol/Paul Morrisey, The Last House On The Left, The Man Who Fell To Earth, John Hughes films, Coen brothers films (especially pre Fargo), Jubilee (or anything Derek Jarman), Orlando, The Hitcher (1986), Near Dark, Point Break, New Jack City, The Usual Suspects, The Last Supper, Shallow Grave, Trainspotting, Showgirls, Absolute Beginners, Brazil,.
Bored now. Hopefully there'll be some stuff there you'll like.
OK, I'll add a few more.
The Shawshank Redemption, A Clockwork Orange, Withnail & I, Scum, Clerks, Suburbia, The Doom Generation, The Class Of '84, Repo Man, Sid & Nancy, Electra Glide In Blue, Quadrophenia, Wayne's World, The Decline Of Western Civilization, Pump Up The Volume, Easy Rider, The Trip, The Wild One, Hell's Angels On Wheels, The Girl On A Motorcycle, Betty Blue, Subway, La Haine, The City Of Lost Children, Delicatessen, Taxi, la Cage aux Folles, Xanadu. You Can't Stop The Music, My Private Idaho, Paris Texas, Kids, Big Wednesday, John Woo's HK films, 24 Hours Party People, Memento, 84C MoPic, The War Game, The Hill, Southern Comfort, Universal Soldier, El Mariachi, Elvira: Mistress Of The Dark, UHF, Beastmaster, Krull, The Dark Crystal, Gator, Ken Russell films, Romper Stomper, Poolhall Junkies, Split Second, Piranha 1 & 2, Shark Attack 1, 2, 3, David Cronenberg films (especially upto Naked Lunch), Slacker, Dazed And Confused, Before Sunrise, Logan's Run, Rollerball, The Filth And The Fury.
There's also the DPP list, better known as The Video Nasties list.
http://en.wikipedia.org/wiki/Video_nasties
Although, most of them became cult
because of the list.
There's a documentary about this time;
http://www.imdb.com/title/tt1740712/
Which is really good. It's both informative and gives a real feel for the time. Or, maybe, that was just nostalgia.