Even the original trilogy has more surprises left in it than a green swamp dwarf (i.e. Yoda).
  1. Millennium Falcon = a burger.
    Needing a new design for the key spaceship of the entire franchise, designer Ralph McQuarrie found inspiration in George Lucas eating a hamburger, with an olive skewered by a toothpick sticking out of the bun. Boom -- add some spacy, sci-fi shit jutting out of it, and you've got the Millennium Falcon we love today:
  2. R2-D2 met Bugs Bunny.
    In the 1960 Bugs Bunny cartoon "Lighter Than Hare”, Yosemite Sam is an alien (sure, why the fuck not) who comes to Earth to kidnap an earthling and decides that it has to be Bugs, sending a robot named ZX29B to fetch him. And, yup, you can't deny that that sure looks a lot like a cartoon version of R2-D2:
  3. The best battle = an accident.
    The material model maker Colin Cantwell used to build the Death Star's iconic "that's no moon" shape had a tendency to shrink, which caused its two dome-shaped halves to not quite meet up in the middle, leaving an unsightly gap around its equator. Instead of bothering to fix it, he called George Lucas and convinced him the final battle 'A New Hope' hinges on should happen in a totally definitely not-accidental trench:
  4. It had more CGI than the prequels.
    'Revenge Of The Sith', for example, spent more money on miniature props than 'A New Hope' spent on 'A New Hope'. Conversely, the old movies had way more special effects, blue-screen character insertion, and disco-era computer manipulation than people tend to remember:
  5. They kept “I am your father” SUPER secret.
    George Lucas had the guy in Vader's suit say “Obi-Wan killed your father” on set. James Earl Jones would dub over David Prowse's lines later, so it was extremely easy for Lucas to just write that fake line into the script. What was harder was telling director Irvin Kershner, actor Mark Hamill, and NO ONE ELSE AT ALL about the big reveal until ‘Empire’ came out: