When Isaiah Zagar moved to Philadelphia in the 1960s, he started creating a massive mural made of shards of glass and tile on the side of an abandoned building. The ongoing art chronicled the highs and lows of his marriage and the life of his two sons, one of whom has now made a documentary about the memoir in mosaic, called In a Dream. Check out the trailer below.

In a recent interview, filmmaker Jeremiah Zagar talks about his parents' hippie existence and the impetus for the project: "My mother decided I should film my family, sort of in the same way she decided my father should make art about our family." The documentary, which airs on HBO 2 tonight and comes out on DVD in September, records his father's nervous breakdown and his brother's time in rehab. I love the line in the trailer when Isaiah says, "You know a lot when you lose something. When you got it, you don't know." Now I really want to see this mural.