Tomorrow we'll have a story about the Linux version of Boxee, a "social media center" that's based upon X-Box Media Center. In the mean time though check out http://www.boxee.tv/
The Boxee company though has allowed us to give out invites for the private alpha testing going on for the Linux version. Right now Boxee is only available for Ubuntu 7.10 and Ubuntu 8.04.
So if you're interested in trying out this new Linux media center application (for free), post your email address in this thread along with a simple (or a lengthy one works too) explanation as to why you'd like to test Boxee. Then we'll email you out invites. You also must have at least five valid posts in the Phoronix Forums to be elgible.