As the lingua franca of business, slideshows (and videos) can be great for telling a story or painting a picture. They can also be dead boring, unless you present in person, hit the highlights, and beware the bullets. Presentations can serve as a container for most other deliverables.
* The Cognitive Style of PowerPoint by Edward Tufte
* In Defense of PowerPoint by Don Norman
* IA Summit Presentations (SlideShare)
Source: User Experience Deliverables
by Peter Morville and Jeffery Callender