This is a very useful and extensive collection of test-cards, colour-bars, and sound checks. If you have a half-decent AV system, this will certainly help you get the best out of it, both visually and aurally. I would have been happy with this DVD if it were just a collection of decent test-cards and sounds, but it is very well presented; you are guided through the processes of setting up the TV and audio amplifier for best performance in a way that even a complete beginner should find easy to comprehend. You will hear where your speaker and subwoofer cross-over if it's not set-up just right. You get to see what your TV actually does with an image that is of a different ratio... I could go on, but you get the picture ;-)
Any grumbles? Well, the navigation would take a DVD beginner a few minutes to get used to as full use is made of the format's menu systems. ... And you could find yourself wanting to spend out on some more AV equipment!
Summary - an invaluable tool for anyone interested getting the best from their AV set-up, from basic 'TV & Hi-Fi' through to advanced THX audio and hi-definition or projection system. And all for the cost of a scart cable - buy it!