|Hmm. If you mean using it as an overgrown remote control - I'd say you have a good chance. If you mean video playback, well - I wouldn't get my hopes up. I'm actually planning on doing something very similar with mine - though it will be a front end to a home automation system, not MythTV.|
It's actually a great machine for front ends, due to its high SAF (spouse approval factor) - but the combination of DSTN screen, low end AMD K6 processor, and USB ethernet make it a poor candidate for anything that requires much processing.