You have to give this episode an 'A' for originality.
Of all the offbeat characters to appear on the island, most if not all took themselves seriously. In this case, former TARZAN screen star Denny Miller actually plays an actor playing Tarzan to get the feel of what it's like to be that character. Get it?
Denny plays Tongo, the wild ape man, and is the whole show. He's fun to watch. Tongo carries with him a tape recorder to document what he's doing, sort of an acting exercise. The castaways take him seriously, although Ginger tries to "comunicate" him via grunts! That's a start. There's also a real ape running around the place, and why not?... played by Janos Prachaska, who specailized in animal and creature roles for decades. He was a master of characterizations.
There is one interesting scene where Tongo speaks into his tape recorder, revealing he actually recognizes Ginger as the missing movie star. That all said -- you guessed it --they still remain stuck on the island!
Written by funny guys Sidney Mandel and Roy Kammerman, who later did many episodes for LOVE, AMERICAN STYLE.
A salute to kooky Denny Miller, who also guest starred in an earlier episode. SEASON 3 EPISODE 20 remastered dvd box set.