I can think of another episode with a nude man. It was the program "The secret sharer" based upon a Joseph ("Heart of Darkness", the novel which inspired in part the movie "Apocalypse now") Conrad story.

Mandel Kramer was the nude guy swimming off the bow of a military ship, and was brought in by the captain of the vessel (Norman Rose, I think) as a secret stowaway that he kept in his cabin (fully clothed, fortunately).