soylent green one best disturbing science fiction movies s still persuasive even todays standards although flawed little dated apocalyptic touch environmental premise typical time still feel unsettling thoughtprovoking films qualitylevel surpasses majority contemporary sf flicks strong cast intense sequences personally consider classic new york  depressing place alive overpopulation unemployment unhealthy climate total scarcity every vital food product form food available synthetic distributed soylent company charlton heston in great shape plays cop investigating murder one soylents eminent executives stumbles upon scandals dark secrets script little oversentimental times climax really come big surprise still atmosphere tense uncanny riotsequence truly grueling easily one macabre moments s cinema edward g robinson ultimately impressive last role theres great but modest supportive role joseph cotton baron blood the abominable dr phibes sciencefiction book nightmarish inevitable fade humanity fancy spaceships hairy monsters attacking planet