Grab hold of your lightsabre – something Wookie this way comes. Yes, it’s time for the annual Jedi jamboree that is 4 May, better known to geeks across the galaxy as Star Wars Day. A play on the Jedi Knight phrase “May the Force be with you”, the occasion sees Star Wars fans come together to honour the legacy of the science fiction saga that began with the original George Lucas movie in 1977. Star Wars has gone on to become the biggest brand in nerddom – growing even more inescapable when Disney paid Lucas $2bn for the franchise in...