"Our Vines Have Tender Apes" marks the return of former Tarzan Denny Miller (from the 1959 remake of "Tarzan the Ape Man"), previously a champion surfer in "Big Man on a Little Stick," here playing a facsimile of Edgar Rice Burroughs' Ape Man as the leopard skin-clad Tongo, discovered sleeping in Gilligan's hammock. All of the castaways in turn are menaced by the inarticulate brute, until a scheme is hatched to trap him in a cage big enough to hold him. Once he's left alone, Tongo takes out a tape recorder, keeping track of his exploits on this third night on the island, just an actor playing a part that he hopes will make him a star. The castaways are amazed at how easily he adjusts to their teachings, though Mr. Howell's attempt at culture, believing Tongo's grunt to be a sign that he's from Harvard, concludes with his exclamation that the messy eater must be a Yale man! The appearance of a genuine ape (Janos Prohaska) reveals Tongo to be a coward of the first order, leaving behind the tape recorder to show how he made fools of the castaways. This time the intruder escapes by helicopter, unwilling to rescue the islanders for fear that they might spill the beans about his poor performance with the real ape. Denny Miller never again donned the savage outfit, but continued to play rugged types in scores of comedy shows like I DREAM OF JEANNIE and Sherwood Schwartz's own THE BRADY BUNCH. Janos Prohaska played apes, gorillas, and other strange creatures in a number of science fiction shows, particularly on STAR TREK, playing the Horta in "The Devil in the Dark" and the Mugato in "A Private Little War."