Tippi Hedren in The Harrad Experiment (1973)

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Review

Advertised as "The sex manifesto for the free love generation," The Harrad Experiment follows Don Johnson and a bunch of horny college students as sexual guinea pigs. They actually get credit for rooming with cuties, taking special mating classes and having toga parties without the togas. Good news: everybody gets naked, right down to their pretty pubes. That includes hippie hotties like Victoria Thompson, Laurie Walters and Susan Taggart. Even teacher Tippi Hedren gets down to her tightie whities. Bad news: Johnson and the other male cast members show their members. Still, the Harrad Experiment is a torrid success.