Serenity, the big screen continuation of the now defunct Firefly TV series, is coming to theatres soon (September 30, in fact), and I am very excited. Because I am a nerd. Honestly, though, do yourself a favour and watch the show. It' only 14 episodes, and is on DVD now.
Anyway, as part of the marketing for the film, Joss Whedon recruited Summer Glau for some really cool, and creepy viral videos. If you know Firefly, you'll definitely get a kick out of them. If you don't, maybe it'll peak your curiosity. And don't forget about the Trailer, too.