The Bronswick Affairs (1978) is an amazing exemple of this type, 23 minutes, and it can be watched for free here : http://www.onf.ca/film/L_affaire_Bronswik/
Thanks Bas, and sorry for the late answer. I'll add those as well, really appreciate it.
Great topic for a list, filmbot. For additions, how about: David Holzman's Diary (1967), Forgotten Silver (1995) and Dark Side of the Moon (2002)
@Mr. Salem Thanks for the suggestions, I need to watch them too
@Brady. mmm... yeah, I think so. In its own unorthodox way
