Wed., April 9, 7 p.m., the Berkeley Documentary Film Series features Skin of Glass, a film by Denise Zmekhol, an Arab-Brazilian, award-winning director whose documentary Children of the Amazon was broadcast on PBS. This new documentary starts with the discovery by the filmmaker that her late father's most celebrated work as an architect, a modernist glass skyscraper in the heart of Sao Paulo, has become occupied by hundreds of homeless families. Admission is $15 online or at the door, and $10 for club members, seniors and students.