This episode was filmed on the set of Gilligan's Island (1964). The island is named Schwartz's Island after Sherwood Schwartz, the creator of that show.
When Starker is observing Max and 99, and says "very interesting". This was a sly nod to Arte Johnson and his German soldier character on the hugely popular Rowan & Martin's Laugh-In (1967).
Starker repeats a slogan from Timex watch commercials: "it takes a licking but keeps on ticking."
Don Adams refused to appear in the fifth season episode Ice Station Siegfried because of its similarity to this fourth season episode. Both plots involve Siegfried using a powerful weapon in a remote location. Adams felt that the writers for Ice Station Siegfried were reusing a previous story instead of coming up with new ideas.