A great cult movie is like a weird underground discovery, that feels so strange and wonderful, you suspect that you're the first person ever to appreciate it properly. But certain cult films have acquired fame and influence to rival any blockbuster, and have become part of our shared vocabulary. Here are 30 essential cult movies that everybody ought to watch, at least once.

Note: We debated a lot what we would consider a "cult movie" for the purposes of this list, and we mostly stuck to films that were not huge box-office hits and didn't get massive mainstream exposure when they were first released. The films on this list mostly either flew under the radar or were considered massive flops when they came out originally.

30) Zardoz

This is a movie set in the post-apocalypse year 2293 that features Sean Connery with a ponytail wearing some kind of red, leather, knee high boots/suspenders thing along with a fake god that spouts the following doctrine: The gun is good. The penis is evil. The penis shoots seeds, and makes new life to poison the Earth with a plague of men, as once it was, but the gun shoots death, and purifies the Earth of the filth of brutals. Go forth ... and kill! The only way a person could properly appreciate this movie is with cult status, and a handful of LSD. But it's absolutely something you have to experience at least once.

http://io9.com/30-cult-movies-that-absolutely-everybody-must-see-1538502596