Every good account person and planner should be looking for 'the perfect wave' - that most amazing PowerPoint slide after which you can die easy in the knowledge that just once you saw perfection.
Russell Davies recently got close with this one:
I'm talking about the best PowerPoint slide to get across an idea, to make people think in a different way.
Of course PowerPoint is used badly, and is in practical terms mostly Bad and Wrong, but think about what it's supposed to be - a means of delivering visual aids, then there's nothing inherently evil about it.
For some deep deep stuff, check Presentation Zen