Did you meet your betrothed during a "Halo" death match? Did you share your first intimate moment while watching Han and Leia kiss? Have you both already requested time off work when the next "Star Trek" movie comes out? If so, you might want to geek up your vows with a novelty-themed wedding.
It can be anything you want. Dress up as Han and Leia (as Luke and Leia would just be wrong), or get married on the bridge of a makeshift Starship Enterprise. If video games are more your thing, adorn yourselves as Link and Zelda and cut into a Triforce-shaped cake.
Of course, your theme will dictate the style of your wedding, so think carefully about where you'd like the ceremony to be and what you want it to look like. For example, a green and purple indoor "Halo" wedding might not be quite as nice as outside gold, green and white "Legend of Zelda" nuptials.