It's a very broad overview of the whole scenario but while it touches on the root of the problem - the housing prices, it doesn't spend much time on the major causes of the calamity.
But for most people who have no interest in business/finance, it's more than enough to know about.
This dude (who made the animation and explaination) is good! Smart to make this animation to promote himself and his visual design aid business/career also!