As I Was Moving Ahead Occasionally I Saw Brief Glimpses of Beauty
Starring Jonas Mekas, Stan Brakhage, Jane Brakhage, Robert Breer, Hollis Frampton, Allen Ginsberg, Ken Jacobs, Peter Kubelka, Adolfas Mekas, Oona Mekas
It's a documentary and biography movie, and has a rating of 8.2 out of 10 from Imdb which is very high for this kind of movie.
Watch it here
Not found streaming from Colombia.