Okay, we'll admit video cables aren't a very exciting topic but if you really want to build that kick-butt entertainment system, you really should have a basic understanding of video cables. eCoustics.com has an informative article that states:

When reading descriptions of home theater cable products off of packages in a big-box store, or off of websites online, it's sometimes hard to get a clear understanding of just what, exactly, is inside a length of cable. It often isn't clear where the engineering-speak ends and where the marketing-speak begins, and the marketing-speak certainly isn't usually designed to aid understanding.

Read Video Cables from the Inside Out

Also be sure to check out their article that compares digital and analog cables:

Many of the best video cables on the market today were designed primarily for use in the digital domain; but can a digital cable really perform well as an analog cable? Can an analog cable be used as a digital cable? What's the difference, anyway, between digital and analog cables? They both move electrons, don't they? All of these are interesting questions, and bear some discussion.

Read Digital Cables vs. Analog Cables -- What's the Difference?