I'm sharing this because it just makes me so damn happy.
This is one of the best fanvids ever, as far as I'm concerned. It's a grand, glorious and sometimes funny celebration of sci-fi fandom--and their starships. Especially their starships. Set to the music of Niki Minaj's Starships. Of course. And there's plenty of Star Wars, Star Trek: Voyager, Firefly and Stargate: Atlantis, which makes me extra-happy.
As forever, I found this via The Mary Sue (though apparently it's no longer there). Needless to say the lyrics are NSFW.
ETA: Very belatedly let me credit bironic, who made this vid of awesome.