Der Siebent Kontinent is a film you should watch. It is not pleasant neither does Michael Haneke uses any tricks in order to even interest you about the characters or their lives. Yet, it is as powerful as an atomic bomb during peace time. It is LOUD and its message (which is whatever you want it to be) is right in your face.
It is amazing how a masterpiece needs no soundtrack, fancy camera work or explicit and extended dialogs.
Unfortunately, it is very hard to find. The screenings are rare and no personal editions on VHS or DVD exist as far as I am aware. Many will recognize the "Piano Teacher" approach to directing but, this is as powerful as it can get. One of the finest examples of style not overlapping form.
Treat yourself with this lesson. Watch it if you can. Specially if you experienced depression at a given time in your life.