I saw this Lithuanian movie on the Stockholm Film Festival a few years ago. It's a real work of art, but is definitely not for casual viewing. If you want action, look elsewhere.
Koridorius is a very slow-paced, documentary styled movie about the tenants of a run-down apartment building somewhere in Lithuania. There's no plot or dialog, not in the usual sense anyway. Instead the focus is on the faces and simple actions of these people. And the camera takes its good time to show this, which really works since the photography of the movie is just beautiful. Some of the shots are a 10 minute long close-up of the same face, putting the viewer in an almost meditative state.
If you like to see a movie totally different from the mainstream, this is it.