Topsy-Turvy

"Topsy-Turvy" is the 78th episode of Gilligan's Island and the tenth episode of the third season. It aired November 14, 1966.

Synopsis
After an accident, Gilligan sees everything upside down; the Professor tries to cure him-but it only results in Gilligan seeing everything double. All the castaways, with the exception of Gilligan, are captured by three fierce headhunters; their only hope of rescue is Gilligan--are the castaways doomed?

Trivia

 * The TV Land syndicated version omits the ending where Gilligan drinks the potion and sees five pies instead of one, but which only results in the Skipper getting a pie in the face!