Here are some web sites I have found helpful for all of my projects and audiovisual endeavors.

Home Theater Forum- Forum discussing all things related to the home theater, from Hardware (monitors, receivers, players) to software (DVDs, etc.), and even room layout and audio theory!  Good times!

Driver Agent- A great site that sweeps your PC and automatically finds all the driver updates needed to optimize your machine.  Must have for keeping your Multimedia PC hub running at the top of its game.  Has a subscription fee though...

EBay- My virtual home away from home.  If my home was an auction house, that is.  Its not.

CSS Color Chart- Helpful for coordinating your spot.  You gots to coordinate!