Having an awesome website, virtual guests, and a QR code on your save-the-dates all sounds awesome, but there's so much more to "geeking out" than whipping out what new technology you have.
Here are a couple more theme ideas for those who wish to honor their geekdom:
A very specific theme, but there are different approaches you can take. The most obvious is taking either the Empire's side with the bride dressed as Padme and the groom as Darth Vader (or Anakin), or taking the Jedi's side with Princess Leia and Han Solo.
You can also just take inspiration from Star Wars and use the title crawl style font on your invitations and/or menu cards, sprinkle stars everywhere, and use a light saber to cut your Death Star cake.
Think castles and wands and robes. Don't forget to insist your officiant wear a very long beard. Empty owl cages and a variety of brooms would make nice decor. Preston Castle might be the perfect place for this kind of theme in Sacramento.
Check out a few more themes here. They aren't quite as geeky, but there's nothing stopping you from making them so.