MythTV 0.13 is out. The new release includes a lot of bugfixes, an improved scheduler, a Konq-based browser plugin, and more. While poking around the site, I also found two live-cd distributions that were built around MythTV: KnoppMyth and MiniMyth. KnoppMyth is (as you probably guessed) based on Knoppix. MiniMyth is designed to be run on the VIA Mini-ITX platform, but should run just fine on any standard hardware. MiniMyth is pretty much built from scratch using Busybox and other tools.