PHNOM PENH - Cambodian-born filmmaker Rithy Panh has built a career out of documenting life in post-Khmer Rouge Cambodia. His topics may be set well after the killings, but they always seem to be playing out in the shadows of history, with one eye on the past and one in the present. His film Site 2 explores the lives of a Cambodian family of refugees who fled the Khmer Rouge's terror to the relative safety of a border camp in Thailand. In The Land of the Wandering Souls, development clashes with buried secrets when laborers working on a project to...