This ecologically concerned outer-space fiction, directed by Douglas Trumbull, taps the audience's fondness for household plants and for cute, pint-sized robots. The use of Joan Baez songs as morality boosters is facile but at least understandable; the casting of Bruce Dern in the lead role is less understandable, as he transforms the lone defender of plant life into a sort of junkie-astronaut, jittery, bleary-eyed, choked-up. (1972) — Duncan Shepherd
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