Most PowerPoint presentations well, suck - particularly for academics. And because we use them so much in class, we should do better. I have my intro finance class completely "PowerPointized", and most students like the slides I use. However, I often wonder if using slides so extensively cuts down on the interactive and spontaneous nature of the class.
Here's one possible source of help. I recently found this site called Presentation Zen. It looks to be one of the best advice/resources sites I've seen yet. Lots of resources, and a general mind set that I really like.
I'm hoping it'll help me cut down on the suckage in my slides.