A small form factor Linux desktop with an Intel Core i3/i5 processor.
Use it as is for a streaming media server.
Add the Nvidia card for a sweet little gaming system.
Or select the TV Tuner for a home theater system.
According to an email I received back from ZaReason.
Thanks for the inqury. If we've not already responded, we have a mediabox computer that can be installed with a TV Tuner card, which can be used to watch broadcast (digital) television, and clearQAM cable connections. (It's the MediaBox computer listed under desktops). It can be installed with MythTV, so you can record and playback TV shows and such. MythTV takes a little configuring to your local broadcast settings, after which it acts much like a DVR. You can also load other programs on it, like XBMC, to playback other kinds of media if desired. Hope this helps, otherwise let me know if you've any other questions, thanks,
ZaReason Tech Support
I've set up MythTV before, it is rather convaluted but not impossible. The important thing is to read the instructions carefully. Even if you get it wrong though, you can still go back and reset the configuration.