The Jetway MiniTop is a very small form factor mini computer. At the price points I was able to get it, it was a great buy and makes for a very competent MythTV frontend. The fan can get a little loud but other than that minor issue, it's a fantastic unit and relatively cheap.
There are a few quirks with it. The built in remote control does not seem to work with LIRC. Some kind soul came up with a linux Generic HID Remote Driver that makes it work however.
[LINUX] Generic HID Remote Driver for XBMC (Drivers for XBMC on Linux and XBMC Live)
The HDMI Audio is a bit fussy as well. In addition to the initial setup from the links below, for some reason, most of the time when the system restarts, I need to run the MythTV Audio Setup to get audio to work.
hdmi audio works only with aplay -D
ALSA DigitalOut
ALSA Dmix