With no prior training in film, 21-year-old Londoner Marc Singer set out to make this 16-millimeter black-and-white documentary (2000) about the homeless people living in the tunnels under New York’s Penn Station. Singer’s six-year questincluding a brief stint of being homeless himselfdeserves notice, and in a way I’m disappointed that the film doesn’t go into greater detail about it. But what’s most remarkable and fascinating here are the squatters, who do a pretty good job of explaining themselves without any outside narrator (and who, in countless ways, assisted Singer in shooting the film). The lives of these people inside their shacks are full of surprises (one keeps several dogs as pets, another shaves with an electric razor and a broken mirror) as well as grim confirmations (the self-loathing misery of a crackhead who lost her children in a fire), but the things we don’t know about them also significantly shape our experience of the film. 84 min. (JR)