Place holder and data charts

I realised that most presentation slides I create fall in two categories:

1. Data charts that have information in them that would be impossible to convey verbally (a graph, a table with financial information, a ranking of competitors)
2. Place holders with some powerful visual (picture, typography) and is merely a placeholder for the story told by the presenter

Things go wrong if you mix them: showing hard core data with a cute picture will not work, putting up a detailed consulting framework as your place holder will not work.