There are a number of reasons why I enjoyed this movie.
1.) I am into etymology. Most english words come through French through Latin and it was fun to attempt to match spoken word and subtitle.
2.) French rap. I am very much interested in the hip hop subculture and was amazed how similar theirs is to ours.
3.) Scenic shots. There were: orchards, fields, barren highways, a gypsie camp, a great many paintings, "junk" yards, and such.
4.) The camera shots. The journal/documentary filming allowed for several film taboos to be artfully waived. For example, the directors hands often purposefully find themselves in a shot, these were my favorite parts because of the witticisms she gave at these times. Also, an accidental shot were the camera lense gets in the way was made into another piece of ordinary object art.
5.) Also, I was intrigued by the comparison between classical gleaning, modern gleaning, and modern scavenging. See Dark Days for another good real life scavenger flick.
6.) Lastly, I felt a connection with many of the characters. People who were on the fringe of society and enjoyed it. Specifically, there were a few who had jobs and apartments, but still chose to rumage through old trash for their meals. "I've been living off trash for 10 years and I haven't been sick once," as on of them candidly stated.
Note - For me, these 6 items more than made this movie an enjoyable experience, but this is basically all there is, so be warned: There is no plot! Really it is just a bunch of stuff that happens, but feel that this helps the movie more than hurts.