Pacific Film Archive's Patricio Guzmán series continues with ‘The Pinochet Case’ and ‘Chile, Obstinate Memory.’ Later this month, Guzman's latest, a poignant and provocative reflection called 'Nostalgia for the Light,' closes the collection and screens as part of the San Francisco International Film Festival, April 26 and 28. More at bampfa.berkeley.edu and fest11.sffs.org.