“Repo Man” is everything a cult film should be. It’s set in an offbeat subculture (1980s Los Angeles punk), it focuses on a bizarre cast of characters (sleazy repo men), is driven by a memorable soundtrack (the aforementioned 1980s L.A. punk) and is full of quotable lines (including a monologue that makes the most of the words “plate,” “shrimp” and “plate of shrimp.”