which brings up the age old question:

Ginger or Mary Anne?
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And I found these interesting facts about Gilligan's Island:

Jayne Mansfield turned down the role of "Ginger"; Carroll O'Connor tested for the role of The Skipper; Dabney Coleman tested for the role of The Professor.

Raquel Welch auditioned for the role of Mary Anne.

Jerry Van Dyke turned down the role of Gilligan.

The first season had the cast using cups that were made from real coconuts. However, they found that the cups were porous and soaked through like they were sweating. Thus in the later seasons, the coconut cups were plastic replicas.