It is interesting to note that the hero Paul Atreides has a sister named Princess Alia (pronounced a-Leia) and though their father doesn’t turn out to be evil, it is their grandfather the Baron Vladimir Harkonnen who is the villain and kills their father.

Also interesting to note that Paul is trained by the Bene Gesserit in Prana Bindu (read: Jedi Bendu) which gives the practitioner supernatural powers in combat. This indicates the underlying spiritual theme that is mirrored in both universes.

Another coincidence is that Jabba physically resembles Leto II God Emperor of Dune who is a large worm like creature with human face and limbs and sits upon a dais.