I found this site to be thought provoking in that I had not used Power Point for anything more than slide show type presentations. I was dissatisfied with this generic (boring) method of presenting material, and found by reading that there were many ways to utilize Power Point. Mini-movie, book sells, commercials, games etc. There are many other sources online that are easy to adapt the way this site suggests.
The site is easy to navigate, but there are resources online that have finished Power Point files on them that are nearly finished. This site just shows how you can make them. Nice, clean site by Univeristy of Minnesota.