From the blog of Vicki A. Davis (Cool Cat Teacher Blog) a nice set of links on effective PowerPoint design together with some examples.
I’ve embedded a couple of the examples below (via SlideShare – kind of a version of ‘YouTube’ but for slide presentations rather than video).
[slideshare id=54123&doc=creative-web-20-learning-5570&w=425]
[slideshare id=60448&doc=microblogging-tiny-social-objects-on-the-future-of-participatory-media-2898&w=425]