The $200 Acer Revos seem to work well as frontends for many on the list. I'm planning to buy one for the bedroom. Small, quiet, low power, can play HD content. The decoder cards for the AppleTV aren't supported in Myth yet, though they probably will be in the future. <br>
<br>For the very remote backend, that's an interesting question. I'd use OpenVPN to link them up, but Myth seems to be kind of set up expecting to be able to stream in real time from the secondary BEs. I'm not sure how it will handle having that BE on a WAN link. You might be able to use the rename script and mirror the files over to a local server then use MythVideo to play them. The interface isn't quite as nice for TV type programs, but with .22 and metadata downloading it works pretty good for me. <br>