Jim Backus (Thurston Howell) has just a walk-on element at the conclusion of the film as he was struggling the Superior phases of Parkinson's sickness by then. His part over the island was stuffed by producing "Thurston Howell IV", performed by David Ruprecht, the couple's supposed son. In GILLIGAN'S ISLAND, http://blake3p54rvy8.blogoscience.com/profile