"Kairo" aka "Pulse"
"Kairo" is a startling example of what is great about foreign horror cinema - in particular, Asian horror cinema. Directors such as Kiyoshi Kurosawa, Takashi Shimizu, Ji-woon Kim, and Hideo Nakata, are all masters of their craft. They can create surreal imagery out of the most seemingly commonplace events. They rely on atmosphere to generate chills, as opposed to shocking the viewer, as is the more traditional American approach. They are seemingly capable of controlling the most primal emotions far more effectively than the best Hollywood directors. This is why I love and respect Asian horror cinema.
"Kichiku dai enkai"
After the leader of a group of activists is imprisoned, their party slowly starts to dissolve under the leadership of his girlfriend, a head-case who cares simply about being in charge, and very little about the operations of the group. She keeps everyone compliant to her wishes and under her charge through sexual manipulation. When the group gets wind of their leader's suicide while in prison, the group turns on one another, inflicting all means of torture and violence on each other.
"Killer Klowns from Outer Space"
I can't think of any films with a more appropriate title than "Killer Klowns from Outer Space". The name (and tagline) not only inform the audience of what the film is about, but also the context, as anyone going into a movie called "Killer Klowns from Outer Space" should know exactly what to expect. But, if for some reason you can't wrap your head around the title, it's an incredibly unique horror film, and one of the few PG-13 horror films that I can highly recommend.
"Kiss Kiss Bang Bang"
I've always been a fan of Robert Downey Jr., but along with many other people whom I have discussed him with, I don't really have a justified reason for my fandom. He hasn't starred in anything beyond "Chaplin" that I've particularly noted him in, and anything where I thought he was stand-out, he was a supporting actor, or part of an ensemble. Yet, I always knew that Downey Jr. had a role like "Kiss Kiss Bang Bang" in him somewhere and that it would take just the right kind of director to get it out of him. Downey Jr. has a natural on-screen charisma similar to John Cusack, Michael Keaton, and Steve Carell. It doesn't matter what the situation, he is always imminently watchable. Why he hasn't been given a chance to run a movie (complete with voice-over) like this earlier, is a mystery to me.
"The Knackery"
George Clarke's "Battle of the Bone" was a testament to true independent film making. Working completely outside of anything that would even remotely resemble a 'professional' system such as Hollywood, Clarke infused "Battle of the Bone" with an energy that few film makers can accomplish with such a limited budget. The Kung-Fu zombie flick was energetic, action-packed, wholly entertaining, and even contained a commentary that was relevant to the film's country of origin, Ireland. It was a tremendously accomplished film for such an inexperienced director.
"Kwaidan"
"Kwaidan" is an early example of the anthology horror film, yet it's told in a manner that is more beautiful than frightening. From the vivid painted backdrops, to the emotion inherent in each story, "Kwaidan" is truly a beautiful film.