I'm having a Star Wars/Star Trek Crossover wedding, do you have any ideas about how to accomplish this?

I am giving my boyfriend that ultimate geek wedding: a Star Wars/Star Trek crossover. He will be wearing an Admirals uniform, I will be wearing Padme's Lake Dress. The minister will be Captain Kirk, the ring bearer will be Darth Sidious. Beyond this I'm at a loss for how to do a decent mash-up of the two.