Haneke is such a clever director -- this might be his best work.

A review:

1. This movie is kinda creepy. Intense. Suspenseful. Slow.

2. Its themes may have something to do with generational guilt, immigration, France/Algeria relationships, selective memory

3. There are clues aplenty Pierrot talking to Majid's son, Ebert's smoking gun clue where the character refers to Pierrot as the one who is doing all these films, Pierrot doesn't have a VHS in his room, but of course his parents aren't home that often and it seems the tapes always arrive when Pierrot isn't in the scene or doesn't show up at all.

If you pay close attention to the background of the ending credits and watch it all the way through, you'll see something at the very end, in the last few seconds, that will explain the whole movie and open your eyes as to who the real psycho is.