I hope we see a Tony review as he is better at these sorts of things but until then I wanted to offer up some input on Izzo's newest DVD. It isn't going to take a lot of words.
It's 28 bucks, it is 75+ mins of no frill easy to follow information on creating AND executing a proper muscle balanced program. John is beyond easy to follow, you will learn some simple terms to explain complicated things.
If you are looking to improve your posture and training balance performance...buy it.
If you have clients at all buy it.
If you deem yourself in charge of designing your own training programs or plan on doing so in the future, buy it.
At 28 bucks you can't go wrong.
You can also look at a video preview
here.