In "Flashback" (citywide), the casting of Dennis Hopper as an Abbie Hoffman-like radical prankster is weirdly dislocating. Still primarily identified with "Easy Rider," Hopper is the shaggy archetype of '60s hippie anomie. [...] Despite his scraggly derelict's appearance and screw-loose antics, he is wised-up and politically right on. He is, God help us, the conscience of the '60s. And that's where the dislocation comes in. Hopper represents the fringes of hippiedom for us, yet his character here is also being promoted as a robust politico—an Abbie Hoffman in Rip Van Winkle drag.