Waterfall charts are common in consulting and executives love them. They are often the simplest way to show how multiple components impact total results, something that higher level business leaders care deeply about. Deconstructing the effects of those components is difficult but worthwhile analysis. It is a shame when action is not taken because someone uses a confusing or sub optimal graph. Utilizing waterfall charts will help you take your data presentation skills to the next level.
Give them a shot and tell me what you think. Do you need more thorough instruction on how to build them?