At a recent lecture I gave at OCR everyone was talking about a new way to present ideas. It is online and called Prezi.
What excited me about this idea was how it combined elements of mind mapping (as used in something like Mindmeister) with a Powerpoint style presentation tool.
It may not suit every project or person but definitely one to be aware of. The flow of the graphics sits better with a flow of a story. The problem with any form of card pitching (which is how I currently work) is that you often descend into "then this happens, then this, then this".
It is free to use - but you can upgrade for extra features. The free version would be more than suitable for most of us.