Gilligan's Island - Season 1 Episode 10 -

While digging, the Skipper uncovers a carved statue of a Tiki God. He then believes a curse has fallen on him for disturbing the resting-place of Watubi, and that his days are numbered. Gilligan dresses up as Watubi, and performs a special ritual dance that the Skipper believes will lift the curse. It is an earth-shaking experience!