Known mostly for being a subtly homoerotic rip-off of "Forbidden Planet." Two men crash-land on an island inhabited by a mad scientist and his three lovely daughters who have never met anyone but their father. When the men take time out of oiling each others' backs and claiming to love the girls they notice the scientist is experimenting with nuclear energy and has the ability to blow up the island. And one would assume non-island portions of the world as well.