The Raw Ones (1965)

In 1967, the Supreme Court upheld that nudity in and of itself is not obscene. This resulted in a spate of nudist camp "documentaries," of which this was a blockbuster. This particular entry holds the distinction of being one of the few that boasts both male and female nudity alike, meaning that there's something for everyone in this flick. We get to see guys and gals in their birthday suits jump rope, work out with weights, snap each other with towels, frolic in a pool, eat watermelon, play tennis, bounce up and down on a trampoline, ride skateboards, and generally have fun sans clothes.