re: A Clockwork Orange

The movie was actually based on a book.

It's premise was to wonder what was better:

Complete free will or human conditioning (in direct contravention of free will) in order to work toward creating a common good?

You don't have to be stoned or anything like that to either enjoy it or understand it. Unlike 99% of films that you'll watch in your lifetime, this one actually requires that the viewer dabble in self-introspection and put some thought into the subject matter.

Whether you're a fan of Kubrick's or not, it's pretty universally held that all of his movies dealt with serious subject matter that was relevant to its time and attempted to portray multiple viewpoints on whatever the movie's gist was.