On NCIS, for some reason, if any of the characters had to work on a particular nuclear aircraft carrier, it was called the “Seahawk” despite having many of its scenes shot on the Enterprise
Arrakis has two moons, the mouse is a kangaroo rat referred to as “Muad’dib” while the other one is called “The Hand of God”. I think that Frank Herbert may have based Arrakis very loosely on what we knew of Mars in 1965, a desert world with two moons
Come to think of it, the Old man does look a lot like J.K. Simmons