Al Pachino was offered the Han Solo role, turning it down because "The script was too confusing".
Darth Vader's lines were recorded in 2.5 hours and James Earl Jones was paid just $7,500
20th Century Fox was convinced that Star Wars was going to flop so they agreed to let George Lucas keep licensing and merchandising rights instead of a 500k director's fee.
George Lucas originally envisioned the planet Tatooine in Star Wars to be a jungle planet, but the idea of having to film in a jungle made him feel "itchy," so he decided to make it a desert planet instead.
Han Solo was supposed to die in Return of the Jedi but George Lucas was afraid it would affect toy sales so he killed off some Ewoks instead
Chewbacca's voice was created with a combination of vocalizations of bears, walruses, badgers, and the howls of sick animals.
Han Solo was frozen in The Empire Strikes Back because Harrison Ford had only signed on for two films and George Lucas wasn't sure he'd return
Star Wars was one of the first films to do away with opening credits. George Lucas was fined $250,000 by the Directors Guild of America for not crediting himself... so he resigned
Miss Piggy was originally voiced by the same person as Yoda