How to install a CableCARD tuner in your DIY Media Center
http://www.engadgethd.com/2009/05/12/how-to-install-a-cablecard-tuner-in-your-diy-media-center/

It should go without saying that in order for this to work you'll need a pretty new computer running either Windows Vista Premium (or higher) or Windows 7 as well as an ATI Digital Cable Tuner (DCT). The first requirement you probably already have, but the second can be a bit more difficult. Both the internal and external version of the DCT have the same functionality with the only real difference being where it is mounted. Some prefer the external since it is easier to swap out and doesn't require opening the case to install, while others will do just about anything to eliminate yet another box with a wall wart from their setup. We will warn you if you're leaning towards the internal though, it is pretty big and puts off some heat. So to accommodate the internal version you're going to need a decent size case as well as an internal USB port and free floppy power plug. Not for everyone

TheTVDB.com

We give a lot of attention to XBMC here, and with just cause. It's an open-source, cross-platform, highly-customizable media center solution that outperforms just about every commercial option out there. Here's how you can make it even better.

30-second commercial skipping on his Comcast DVR:

interesting comment thread on other dvr's including replay history

DVRs have revolutionized the way people watch TV, but if you've always wished your DVR were a little better at skipping commercials, this classic 30-second skip hack is a must. For what it's worth, we realize that these tricks aren't new by any means. Still, we've never featured them here, and the aim of this post is to collect as many of them as possible. Right now, we're aware of two hacks of this kind: one for the TiVo, the other for Comcast DVR.