There are some great linux distributions for mobile and tablet PC's.

Ubuntu Mobile
Moblin
Mer

That's a good point and a great idea. I'll get working on an install guide. For the time being here is a great guide from MythPVR.com. Its an install guide for an older version of Mythbuntu but it is still pretty good.

http://www.mythpvr.com/mythtv/distribution/mythbuntu/install.html

I wrote up an quick how-to on building a Linux DVR. I thought I would share it as my first post on this forum. Let me know if it is informational and if you have any questions. I have built quite a few DVR's from a wide range of hardware capabilities. I will be happy to answer any questions to help you get starterd. Note this article is mainly geared to the beginner.

http://www.ehow.com/how_5870992_build-linux-dvr.html