Presentation skills are not something that agile focuses on, however this skill is essential for project managers despite of methodology being used.

It is especially important if you want to make presentation for your management how to migrate to agile :).

There is quite interesting article presenting interesting approach to creation of power point presentations:
http://tickledbylife.com/index.php/avoiding-death-by-powerpoint/?goback=...

Do you have any experience or other ideas? Please share them with Agilopolis members.