One file that can easily make or break your video, is /etc/X11/xorg.conf and one of the most common things to have to edit is the vertical refresh, or the resolution lines. for instance my tv doesn't like 1600x1200, and every time I did this how-to on this particular pc, I had to remove the 1600x1200 from the xorg.conf before it would work right, but this is not going to happen to everyone.

XBMC by default has no rpm's, and compiling doesnt work due to some error in the python library.

however, someone was kind enough to compile working rpm's out of the SVN branch, making XBMC a nice piece of quality software to add to your HDA expirience.