I've never heard of A Married Couple before, but apparently, it's quite well known. It's directed by Alan King in 1969, set in Toronto. This documentary of a married couple seems to be the pre-cursor to reality television (a la Jessica Simpson and Nick Lachey). It is astounding that some of the dialogue seems to be lifted from my own marriage. After you see it, go home and Google it on YouTube to see what has happened to them after the movie (I won't put a link here, so that you won't be tempted to watch it before seeing it.)
This is a thought provoking documentary that makes you reflect on your own marriage. It's showing at Pacific Cinemateque until March 3.