PC Magazine reports: "In a world of wireless this and wireless that, sometimes we all find ourselves begging for a little bit more - a little more reliability, a little more bandwidth, a little more speed, a little more security, and heck, even a little more free time to enjoy this world that offers so much more. In order to feed this technology crave, we need to go back to the basics and connect our dots with copper."
Unfortunately most audio/video electronics don't support wireless connections. This forces you to run wires behind furniture, along the baseboard, etc. If you want to have a professional looking installation, then you will want to have the wires run behind the walls.
If you're a DIYer looking for a good tutorial on how to properly run computer/video cables and what tools you need. Then checkout the following article.